篇一 : C语言学生成绩管理系统实验报告
实 验 四:结构体(6学时) 实验目的:
1.更加灵活的使用数组作为函数参数;
2.初步掌握开发一个小型实用系统的基本方法;
3.初步掌握书写程序设计开发文档的能力。(]
实验内容:
程序一:学生成绩管理系统
某班期末考试科目为数学(MT)、英语(EN)和物理(PH),有最多不超过30人参加考试。
(1)计算每个学生的总分;
(2)按总分成绩由高到低排出成绩的名次;
(3)打印出名次表,包括名次、学生编号、各科分数、总分;
要求程序运行后先打印出一个菜单,提示用户选择:成绩录入、成绩排序、打印(成绩查找等),在选择某项功能后执行相应的操作。 小组分工情况
一 需求分析
I设计一个学生成绩管理系统至少具有以下功能:
(1)菜单功能:采用文本菜单界面。
(2)计算每个学生总分功能:可以显示出通讯录里的姓名、电话号码等详细信息。
(3)成绩排序功能:按总分成绩由高到低排出成绩的名次。
(4)打印名次表功能:打印出名次表,包括名次、学生编号、各科分数、总分。
II数据库结构
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
struct student{ int num; int mt; int en; int ph;
int sum;}stu[30];
二 总体设计(visio)
框架结构图(系统的功能结构图)
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
三、详细设计
(流程图!!!)
四、程序源代码
#include
#include
int n; int a[30][6];
int luru()
{int i=0,bianhao,MT,EN,PH;
printf("please input bianhao MT EN PH\n");
scanf("%d%d%d%d",&bianhao,&MT,&EN,&PH); while(bianhao!=-1)
{a[i][0]=bianhao;
a[i][1]=MT;
a[i][2]=EN;
a[i][3]=PH;
a[i][4]=MT+EN+PH;
scanf("%d%d%d%d",&bianhao,&MT,&EN,&PH); i++;
}
n=i;
}
paixu( )
{ int i,j,t,k;
for(i=0;i<=n-2;i++)
for(j=i+1;j<=n-1;j++)
if(a[i][4]
for(k=0;k<6;k++)
{t=a[i][k];a[i][k]=a[j][k];a[j][k]=t;}
shuchu(a);
}
shuchu( )
{int i,j;
printf("\t\tbianhao MT EN PH zf mingci\n"); for(i=0;i
{a[i][5]=i+1;
printf("\t\t");
for(j=0;j<6;j++)
printf("%5d",a[i][j]);
printf("\n");
}
}
chazhao( )
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
{int i,j,bianhao;
printf("please bianhao:");
scanf("%d",&bianhao);
printf("\t\tbianhao MT EN PH zf mingci\n"); printf("\t\t");
for(i=0;i
{ if(a[i][0]==bianhao)
{ for(j=0;j<6;j++)
printf("%5d",a[i][j]);
break;
}
}
printf("\n");
}
void main()
{int k=1,*p;
system("cls");
while(k!=-1)
{ printf("\n\n\n");
printf("\t\tStudent achievement management system\n"); printf("\n");
printf("\t\t*************************************\n"); printf("\t\t\t1:chengji luru\n");
printf("\t\t\t2:chengji paixu\n");
printf("\t\t\t3:chengji chazhao\n");
printf("\t\t\t0:tuichu\n");
printf("\t\t*************************************\n"); printf("please select:");
scanf("%d",&k);
switch(k)
{case 1:luru();break;
case 2:paixu();break;
case 3:chazhao();break;
case 0:return;
}
}
}
/*某班期末考试科目为数学(MT)、英
语(EN)和物理(PH),有最多不超过30人参加考试。(]
(1)计算每个学生的总分;
(2)按总分成绩由高到低排出成绩的名次;
(3)打印出名次表,包括名次、学生编号、各科分数、总分;
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
要求程序运行后先打印出一个菜单,提示用户选择:成绩录入、成绩排序、成绩查找,在选择某项功能后执行相应的操作。()
*/
#include
#include
typedef struct student
{int num;
int mt;
int en;
int ph;
int sum;
}st; st stu[30];int n;
void main()
{ int x;
void zongfen(st stu[],int n);
void paixu(st stu[] ,int n);
void dayin(st stu[],int n);
void input();
printf("***************************\n");
printf("1.input\n");
printf("2. zongfen\n");
printf("3 paixu\n");
printf("4.dayin\n");
printf("***************************\n");
printf("please select:(1--4)");
scanf("%d",&x);
while(x>0){
switch(x)
{case 1: input(); break;
case 2: zongfen(stu,n);break;
case 3: paixu(stu,n); break;
case 4:dayin(stu,n); break;
}
printf("please select:(1--4)");
scanf("%d",&x);
}
}
void input(){
int i;
printf("请输入学生人数:(n<=30)\n");
scanf("%d",&n);
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
for(i=0;i
{printf("请输入。(]。。成绩");
scanf("%d%d%d%d",&stu[i].num,&stu[i].mt,&stu[i].en,&stu[i].ph);
}
/*for(i=0;i
{stu[i].sum=stu[i].mt+stu[i].en+stu[i].ph;
printf("学生%d的总成绩为%d\n",stu[i].num,stu[i].sum);}*/
}
void zongfen(st stu[],int n)
{int i;
for(i=0;i
{stu[i].sum=stu[i].mt+stu[i].en+stu[i].ph;
printf("学生%d的总成绩为%d\n",stu[i].num,stu[i].sum);}
}
void paixu(st stu[] ,int n)
{ int i,j; st temp;
for(i=0;i
for(j=0;j
if(stu[i].sum>stu[i+1].sum)
{temp=stu[i];
stu[i]=stu[i+1];
stu[i+1]=temp;
}
for(i=0;i
printf("%d,%d,%d,%d,%d\n",stu[i].num,stu[i].sum,stu[i].mt,stu[i].en,stu[i].ph);
}
void dayin(st stu[],int n)
{void paixu(st stu[] ,int n);
int i;
paixu(stu,n);
for(i=0;i
printf("第%d名,%d,%d,%d,%d,%d\n",i+1,stu[i].num,stu[i].sum,stu[i].mt,stu[i].en,stu[i].ph);
}
/*某班期末考试科目为数学(MT)、英
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
语(EN)和物理(PH),有最多不超过30人参加考试。(]
(1)计算每个学生的总分;
(2)按总分成绩由高到低排出成绩的名次;
(3)打印出名次表,包括名次、学生编号、各科分数、总分;
要求程序运行后先打印出一个菜单,提示用户选择:成绩录入、成绩排序、成绩查找,在选择某项功能后执行相应的操作。
*/
#include
#include
typedef struct student
{int num;
int mt;
int en;
int ph;
int sum;
}st; st stu[30];int n;
void main()
{ int x;
void zongfen(st stu[],int n);
void paixu(st stu[] ,int n);
void dayin(st stu[],int n);
void input();
printf("***************************\n");
printf("1.input\n");
printf("2. zongfen\n");
printf("3 paixu\n");
printf("4.dayin\n");
printf("***************************\n");
printf("please select:(1--4)");
scanf("%d",&x);
while(x>0){
switch(x)
{case 1: input(); break;
case 2: zongfen(stu,n);break;
case 3: paixu(stu,n); break;
case 4:dayin(stu,n); break;
}
printf("please select:(1--4)");
scanf("%d",&x);
}
}
c语言学生成绩管理系统 C语言学生成绩管理系统实验报告
void input(){
int i;
printf("请输入学生人数:(n<=30)\n");
scanf("%d",&n);
for(i=0;i
{printf("请输入。[)。。成绩");
scanf("%d%d%d%d",&stu[i].num,&stu[i].mt,&stu[i].en,&stu[i].ph);
}
/*for(i=0;i
{stu[i].sum=stu[i].mt+stu[i].en+stu[i].ph;
printf("学生%d的总成绩为%d\n",stu[i].num,stu[i].sum);}*/
}
void zongfen(st stu[],int n)
{int i;
for(i=0;i
{stu[i].sum=stu[i].mt+stu[i].en+stu[i].ph;
printf("学生%d的总成绩为%d\n",stu[i].num,stu[i].sum);}
}
void paixu(st stu[] ,int n)
{ int i,j; st temp;
for(i=0;i
for(j=0;j
if(stu[i].sum>stu[i+1].sum)
{temp=stu[i];
stu[i]=stu[i+1];
stu[i+1]=temp;
}
for(i=0;i
printf("%d,%d,%d,%d,%d\n",stu[i].num,stu[i].sum,stu[i].mt,stu[i].en,stu[i].ph);
}
void dayin(st stu[],int n)
{void paixu(st stu[] ,int n);
int i;
paixu(stu,n);
for(i=0;i
printf("第%d名,%d,%d,%d,%d,%d\n",i+1,stu[i].num,stu[i].sum,stu[i].mt,stu[i].en,stu[i].ph);
篇二 : C语言学生成绩管理系统源代码
程序代码:#include#include#include#define SIZE 3 /*定义常量SIZE便于以后的修改*/struct student /*定义一个结构体数组存放学生的信息*/{ int number; /*学号*/ char name[20];/*名字*/ char xueyuan[20];/*学院*/ int cla;/*班级*/ int score[3];/*分数*/ int sum;/*总分*/ int average;/*平均分*/}stu[SIZE]; void menu();/*调用菜单函数*/void write();/*读入信息*/void save(int x);/*保存stud.dat文件函数*/void SaveOneStudent(int i);/*保存一个学生信息*/void SaveAllStudent(int n);/*保存全部学生信息*/void inturn (struct student c[]);/*用于对学生的信息按学号排序的函数*/void save2();/*将排序后的信息存入student.dat文件中*/int AddStudent(int n);/*增加学生信息*/void InputOnestudent(int i);/*输入一个同学信息*/int DelStudent(int n);/*删除学生信息*/void ModifyStudent(int n);/*修改学生信息*/void OutputOneStudent(int i);/*查询一个学生信息*/void SearchMenu(int n);/*查询学生信息操作*/void SearchNumber(int n);/*按学号查询学生信息*/void SearchName(int n);/*按姓名查询学生信息*/void SearchXueyuan(int n);/*按所在学院查询学生信息*/void SearchCla(int n);/*按所在班级查询学生信息*/void tongji();/*学生信息统计操作*/void tongji2();/*统计不及格率操作*/void zfsc();/*总分排序操作*/void avecz();/*按平均分统计人数操作*/void avecz();/*按平均分统计人数操作*/void search();/*查找最高成绩操作*/void tongji2();/*统计不及格率操作*/void read();/*读取student.dat文件文件中学生的信息*/ /*主函数************************************************************************************/void main(){ int n=SIZE; int choice;/*用户选择变量*/ printf("*******************************************************************************\n"); printf("* *\n"); printf("* Hwadee &学生成绩文件管理& Hwadee *\n"); printf("* *\n"); printf("*******************************************************************************\n\n\n"); printf("******************************●●欢迎使用●●*********************************"); while (1) { menu();/*调用菜单函数形成操作界面*/ printf("请选择:"); scanf("%d", &choice); if ( choice==0 ) { printf("\t\t\t\t谢谢使用!!!"); break; } switch(choice) /*多重选择实现功能不同的功能*/ { case 1: write(); inturn(stu); save(SIZE); break; case 2: AddStudent(n); break; case 3: DelStudent(n); break; case 4: ModifyStudent(n); break; case 5: SearchMenu(n); break; case 6: tongji(); break; case 0: printf("\n谢谢使用!再见!\n"); default: printf("\n按键错误!请重新选择!\n"); }/*结束switch*/ }/*结束while*/} 部分程序清单/*菜单函数*************************************************************************************/void menu(){ printf("************请输入所需操作***********\n");/*选择功能菜单*/ printf("*************************************\n"); printf("1.学生成绩写入及排序\n"); printf("2.增加学生信息\n"); printf("3.删除学生信息\n"); printf("4.修改学生信息\n"); printf("5.查询学生信息\n"); printf("6.学生成绩统计操作\n"); printf("0.退出系统\n"); printf("**************************************\n");} /*写入函数*************************************************************************************/void write(){ int i;/*计数变量*/ for(i=0;im[j].number) { temp=m[i]; m[i]=m[j]; m[j]=temp; } } printf("\n排序后的学生信息:\n\n"); for (i=0;i0&&x<6) { switch(x) { case 1: zfsc();break;/*选择按总分排序操作*/ case 2: avecz();break;/*选择按平均分统计人数操作*/ case 3: search();break;/*选择按查找最高成绩操作*/ case 4: tongji();break;/*选择按统计部及格率操作*/ case 0: printf("谢谢使用!再见!\n"); return;/*选择退出操作*/ default: printf("输入错误!请重新输入\n");/*提示错误信息*/ } }} /*总分排序操作*************************************************************************************/void zfsc(){ FILE *wj,*fp; int i,j; struct student temp; if((fp=fopen("student.dat","wb"))==NULL) { printf("文件打开失败!\n"); exit(1); } for(i=0;i59&&stu[i].average<70) { m=i;/*找到平均分69~69学生,并用m记下其下标*/ OutputOneStudent(m); k++;/*k为平均分60~69分人数*/ } printf(" 平均分60~69分的同学信息输出结束\n"); printf("共%d人\n",k); printf(" **********************************************************"); } printf("平均分70~79分的同学有:\n"); for(i=0;i69&&stu[i].average<80) { m=i;/*找到平均分70~79学生,并用m记下其下标*/ OutputOneStudent(m); k++;/*k为平均分70~79分人数*/ } printf(" 平均分70~79分的同学信息输出结束\n"); printf("共%d人\n",k); printf(" **********************************************************"); } printf("平均分80~89分的同学有:\n"); for(i=0;i79&&stu[i].average<90) { m=i;/*找到平均分80~89学生,并用m记下其下标*/ OutputOneStudent(m); k++;/*k为平均分80~89分人数*/ } printf(" 平均分80~89分的同学信息输出结束\n"); printf("共%d人\n",k); printf(" **********************************************************"); } printf("平均分90~100分的同学有:\n"); for(i=0;i89&&stu[i].average<=100) { m=i;/*找到平均分90~100学生,并用m记下其下标*/ OutputOneStudent(m); k++;/*k为平均分90~100分人数*/ } printf(" 平均分90~100分的同学信息输出结束\n"); printf("共%d人\n",k); printf(" **********************************************************"); }} /*查找最高成绩操作****************************************************************************/void search(){ int i=0,x,k=0; printf("********************输入查找选项**********************\n");/*选择功能菜单*/ printf(" 查找高数成绩最高学生请按:1\n"); printf(" 查找英语成绩最高学生请按:2\n"); printf(" 查找C语言成绩最高学生请按:3\n"); scanf("%d",&x);/*用户选择变量*/ if(x==1) { for(i=0;istu[k].score[0]) i=k; } printf("高数成绩最高学生信息如下:\n"); OutputOneStudent(k); printf(" 输出结束\n"); printf(" **********************************************************"); } if(x==2) { for(i=0;istu[k].score[1]) i=k; } printf("英语成绩最高学生信息如下:\n"); OutputOneStudent(k); printf(" 输出结束\n"); printf(" **********************************************************"); } if(x==3) { for(i=0;istu[k].score[2]) i=k; } printf("C语言成绩最高学生信息如下:\n"); OutputOneStudent(k); printf(" 输出结束\n"); printf(" **********************************************************"); }} /*统计不及格率操作*****************************************************************************/void tongji2(){ int x,i,k; printf("********************输入统计选项**********************\n"); /*选择功能菜单*/ printf("统计高数成绩不及格率请按:1\n"); printf("统计英语成绩不及格率请按:2\n"); printf("统计C语言成绩不及格率请按:3\n"); scanf("%d",&x);/*用户选择变量 */ if(x==1) { for(i=0;i
扩展:c语言管理系统源代码 / 学生成绩管理系统代码 / 学生管理系统源代码
篇三 : C语言项目--教师信息/学生成绩管理系统
这个系统实现两个功能,分别是管理教师的信息和学生的成绩,用户可以选择切换实现相应的功能。话不多说了,现在看下程序的实现截图:
下面贴出部分代码:
[cpp]
void add_tea(Teacher tea[])
{
int i=0,j,num;
char str[5];
if(numtea!=0)
{
printf("cover the current record?(y/n)\n");
gets(str);
if(str[0]=='Y'||str[0]=='y')
i=0;
else i=numtea;
}
printf("Please input the number of you add the teachers:");
scanf("%d",&num);
if(i==0)
numtea=num;
else numtea+=num;
if(numtea>lens)
{
lens+=10;
tea=(Teacher *)realloc(tea,lens*SIZE);
}
printf("Please input the teacher's info:\n");
for(;i
{
getchar();
printf("please input the teacher's NO.:");
gets(tea[i].number);
printf("please input the teacher's name:");
gets(tea[i].name);
printf("please input the teacher's sex(man/woman 0/1):");
gets(tea[i].sex);
if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"man");
else strcpy(tea[i].sex,"woman");
printf("please input the teacher's address:");
gets(tea[i].addr);
printf("the teacher is married(No/Yes 0/1):");
gets(tea[i].married);
if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"No");
else strcpy(tea[i].sex,"Yes");
}
display_tea(tea,0,numtea-1);
getchar();
}
void display_tea(Teacher tea[],int n1,int n2)
{
int i;
char str[2];
if(numtea==0){
printf("There is Nothing!\n");
printf("Do you want to open some file to find the record?(Y/N)\n");
gets(str);
if (str[0]=='Y'||str[0]=='y')
{
openfileTXT(tea);
}
else
{
return;
}
}
else
{
for(i=n1;i<=n2;i++)
printf("number:%s\tname:%s\t\tsex:%s\t\taddr:%s\t\tmarried:%s\t",tea[i].number,tea[i].name,tea[i].sex,tea[i].addr,tea[i].married);
}
}
void adjust(Teacher tea[])
{
char str[5];
int i=-1,j;
if(numtea==0)
{
printf("there is nothing !!!\n");
return;
}
while(i<0)
{
i=find_tea(tea);
if(i>=0)
{
printf("Delete it?(y/n)");
gets(str);
if(str[0]=='y'||str[0]=='Y')
{
delete_tea(tea,i);
/*count(stud); */
}
else
{
printf("Adjust it?(y/n)");
gets(str);
if(str[0]=='y'||str[0]=='Y')
{
printf("Please input something you want:\n");
printf("please input the teacher's NO.:");
gets(tea[i].number);
printf("please input the teacher's name:");
gets(tea[i].name);
printf("please input the teacher's sex(man/woman 0/1):");
gets(tea[i].sex);
if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"man");
else strcpy(tea[i].sex,"woman");
printf("please input the teacher's address:");
gets(tea[i].addr);
printf("the teacher is married(No/Yes 0/1):");
gets(tea[i].married);
if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"No");
else strcpy(tea[i].sex,"Yes");
}
/*count(stud); */
}
display_tea(tea,0,numtea-1);
}
printf("Again to Adjust it ?(y/n)\n");
gets(str);
if(str[0]=='y'||str[0]=='Y')
i=-1;
else i=1;
}
}
int find_tea(Teacher tea[])
{
char str[10];
int i;
if(numtea==0)
{
printf("There is nothing\n");
return -1;
}
else
{
printf("what do you want your fashion ?\n1.number\t2.name\t3.addr\n");
gets(str);
if(str[0]=='1')
{
printf("please input the teacher's number:");
gets(str);
for(i=0;i<=numtea;i++)
if(strcmp(str,tea[i].number)==0)
{
display_tea(tea,i,i);
break;
}
else continue;
}
else if(str[0]=='2')
{
printf("please input the teacher's name:");扩展:学生成绩系统c语言 / c语言写学生成绩系统 / c语言学生管理系统
gets(str);
for(i=0;i<=numtea;i++)
if(strcmp(str,tea[i].name)==0)
{
display_tea(tea,i,i);
break;
}
else continue;
}
else if(str[0]=='3')
{
printf("please input the teacher's address:");
gets(str);
for(i=0;i<=numtea;i++)
if(strcmp(str,tea[i].addr)==0)
{
display_tea(tea,i,i);
break;
}
else continue;
}
if(i>numtea)
{
printf("Nothing has find\n");
return -1;
}
return i;
}
}
void delete_tea(Teacher tea[],int i)
{
int j;
while(i>=0)
{
for(j=i;j
tea[j]=tea[j+1];
numtea--;
printf("Delete Success!\n");
}
}
int writetoTXT(Teacher tea[])
{
int i=0,j;
FILE *fp;
char filename[20];
printf("Please input the file's name:");
gets(filename);
fp=fopen(filename,"w");
fprintf(fp,"%d\n",numtea);
while(i
{
fprintf(fp,"%s %s %s %s %s",tea[i].number,tea[i].name,tea[i].sex,tea[i].addr,tea[i].married);
i++;
}
fclose(fp);
printf("Save success!!!\n");
display_tea(tea,0,numtea-1);
numtea=0;
return 0;
}
int openfileTXT(Teacher tea[])
{
int i=0,j;
FILE *fp;
char filename[20],str[2];
if(numtea!=0)
{
printf("There has some records,Do you want to save them?(y/n)");
gets(str);
if(str[0]=='y'||str[0]=='Y')
writetoTXT(tea);
}
printf("Please input the file name:");
gets(filename);
numtea=0;
if((fp=fopen(filename,"rb+"))==NULL)
{
printf("Sorry ,can't open the file\n");
return(-1);
}
fscanf(fp,"%d",&numtea);
fgetc(fp);
while(i
{
fscanf(fp,"%s",&tea[i].number);
fscanf(fp,"%s",&tea[i].name);
fscanf(fp,"%s",&tea[i].sex);
fscanf(fp,"%s",&tea[i].addr);
fscanf(fp,"%s",&tea[i].married);
i++;
}
fclose(fp);
printf("Read the file success\n");
printf("Display the record ?(y/n)");
gets(str);
if(str[0]=='y'||str[0]=='Y')
display_tea(tea,0,numtea-1);
return(0);
}
void displayTheSystemInfo()
{
printf("\t\t制作人员: \n\n");
printf("\t\t张虎(BruceZhang)\n");
printf("\n\n");
}
扩展:学生成绩系统c语言 / c语言写学生成绩系统 / c语言学生管理系统
篇四 : C语言学生成绩管理系统
C语言学生成绩管理系统[c语言学生成绩管理系统]C语言学生成绩管理系统——详细知识
[c语言学生成绩管理系统]C语言学生成绩管理系统 一
/*_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
ssm.c : Students' score manager V 1.01
Copyright (C) by syuui . All rights reserved .
Red Hat 9.0 , gcc 3.2.2 compiling passed .
Usage : ssm -axnlh [-i [input file]] [-o [output file]]
-a : calculate classes' average score
-x : calculate students' max score
-n : calculate students' min score
-l : list all records
-h : print help page
-i [input file] : read data from [input file]
Default file : in.src
-o [output file] : output result to [output file]
Default file : out.src
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/*/
#include
#include
#define FNAME_LEN 255 //--------------file name length
#define NM_LEN 255 //--------------name length
#define _DFLT_OUT out.src //------default output file name
#define _DFLT_INP in.src //------default input file name
/*-=-=-=-definations of flags-=-=-=-*/
#define LIST 1
#define AVER 2
#define MAX 4
#define MIN 8
#define INPUT 16
#define OUTPUT 32
struct MODEL {
/*-=-=-=- Name -=-=-=-*/
char name[NM_LEN] ;
/*-=-=-=- scores -=-=-=-*/
int c1 , //--------------score 1
c2 , //--------------score 2
c3 , //--------------score 3
c4 , //--------------score 4
c5 , //--------------score 5
total ; //--------------total of score
float aver ; //--------------average of score
struct MODEL *next ; //------link pointer
};
typedef struct MODEL SCORE ;
typedef int FLAG ;
/*-=-=-=-=-=-Function _help-=-=-=-=-=-*/
void _help()
{
fprintf( stderr , \n );
fprintf( stderr , _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/\n\n );
fprintf( stderr , ssm.c : Students' score manager V1.01\n );
fprintf( stderr , Copyright (C) by syuui . All rights reserved .\n\n );
fprintf( stderr , Usage : ssm -axnlh [-i ] [-o ]\n );
fprintf( stderr , -a : calculate classes' average score\n );
fprintf( stderr , -x : calculate students' max score\n );
fprintf( stderr , -n : calculate students' min score\n );
fprintf( stderr , -l : list all records\n );
fprintf( stderr , -h : print this screen\n );
fprintf( stderr , -i [input file] : read data from [input file]\n );
fprintf( stderr , default : in.src\n );
fprintf( stderr , -o [output file] : output result to [output file]\n );
fprintf( stderr , default : out.src\n\n );
fprintf( stderr , _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/\n\n );
}
/*-=-=-=-=-=-Function push-=-=-=-=-=-*/
/* This function will push a node to link */
/* If this function successfully exited , return 0 */
int push( SCORE **head , //--------------head of the link
const char *dname , //----------student's name
const int dc1 , //--------------score 1
const int dc2 , //--------------score 2
const int dc3 , //--------------score 3
const int dc4 , //--------------score 4
const int dc5 ) //--------------score 5
{
SCORE *tmp ,
*new ; //------new node
/*-=-=-=-Open a node-=-=-=-*/
new = (SCORE *)malloc( sizeof(SCORE) );
/*-=-=-=-Set data-=-=-=-*/
strcpy( new->name , dname );
new->c1 = dc1 ;
new->c2 = dc2 ;
new->c3 = dc3 ;
new->c4 = dc4 ;
new->c5 = dc5 ;
/*-=-=-=-Push node into the link-=-=-=-*/
if( *head == NULL )
{
*head = new ;
(*head)->next = NULL ;
}
else
{
tmp = *head ;
*head = new ;
(*head)->next = tmp ;
}
return 0;
}
/*-=-=-=-=-=-Function class_aver-=-=-=-=-=-*/
/* This function will claculate average score */
/* This function returns number of the records */
int class_aver( SCORE *head , //--------------head of the link
float *ac1 , //--------------average score 1
float *ac2 , //--------------average score 2
float *ac3 , //--------------average score 3
float *ac4 , //--------------average score 4
float *ac5 ) //--------------average score 5
{
float tc1 , tc2 , tc3 , tc4 , tc5 ; //------total of a class
SCORE *pr ;
int n=0 ;
pr = head ;
tc1 = tc2 = tc3 = tc4 = tc5 = 0.0 ;
while( pr != NULL )
{
/*-=-=-=-Claculate total score of each class-=-=-=-*/
tc1 += pr->c1 ;
tc2 += pr->c2 ;
tc3 += pr->c3 ;
tc4 += pr->c4 ;
tc5 += pr->c5 ;
pr = pr->next ;
n++ ;
}
*ac1 = tc1 / n ;
*ac2 = tc2 / n ;
*ac3 = tc3 / n ;
*ac4 = tc4 / n ;
*ac5 = tc5 / n ;
return n ;
}
/*-=-=-=-=-=-Function stu_ttl_aver-=-=-=-=-=-*/
/* This function will claculate average score
and total score for each student */
/* This function returns number of the records */
int stu_ttl_aver( SCORE *head ) //------head of the link
{
SCORE *pr ;
int n = 0 ;
pr = head ;
while( pr != NULL )
{
/*-=-=-=-claculating total-=-=-=-*/
pr->total =
pr->c1 +
pr->c2 +
pr->c3 +
pr->c4 +
pr->c5 ;
/*-=-=-=-claculating average-=-=-=-*/
pr->aver = (float)pr->total / 5.0 ;
n++ ;
pr = pr->next ;
}
return n ;
}
/*-=-=-=-=-=-Function srch_max-=-=-=-=-=-*/
/* This function will search the record
which has the max value of total score */
/* This function returns a SCORE pointer
which points to the result */
SCORE *srch_max( SCORE *head ) //------head of the link
{
SCORE *pr ;
int max ;
pr = head ;
max = -1 ;
while( pr != NULL )
{
/*-=-=-=-search max value-=-=-=-*/
if( pr->total > max )
max = pr->total ;
pr = pr->next ;
}
pr = head ;
while( pr != NULL )
{
/*-=-=-=-search record-=-=-=-*/
if( pr->total == max )
break ;
pr = pr->next ;
}
return pr ;
}
/*-=-=-=-=-=-Function srch_min-=-=-=-=-=-*/
/* This function will search the record
which has the min value of total score */
/* This function returns a SCORE pointer
which points to the result */
SCORE *srch_min( SCORE *head ) //------head of the link
{
SCORE *pr ;
int min ;
pr = head ;
min = 9999 ;
while( pr != NULL )
{
/*-=-=-=-search min value-=-=-=-*/
if( pr->total < min )
min = pr->total ;
pr = pr->next ;
}
pr = head ;
while( pr != NULL )
{
/*-=-=-=-search record-=-=-=-*/
if( pr->total == min )
break ;
pr = pr->next ;
}
return pr ;
}
[c语言学生成绩管理系统]C语言学生成绩管理系统 二
/*-=-=-=-=-=-functon main-=-=-=-=-=-*/
int main( int argc , char *argv[] )
{
FILE *fp ; //----------------------I/O file stream
FLAG flag=0 ; //----------------------operations flag
SCORE *head , *pr;
int i , ndata ,
c1 , c2 , c3 , c4 , c5 ;
char in_fname[FNAME_LEN] , //--------input file name
out_fname[FNAME_LEN] , //------output file name
name[NM_LEN] ;
float ac1 , ac2 , ac3 , ac4 , ac5 ;
head = NULL ;
pr = NULL ;
fp = NULL ;
/*-=-=-=-check number of the parameters-=-=-=-*/
if( argc<2 )
{
fprintf( stderr , %s -atxnlh [-i ] [-o ]\n , argv[0] );
fprintf( stderr , %s -h to get more help.\n , argv[0] );
exit(1);
}
strcpy( in_fname , _DFLT_INP );
strcpy( out_fname , _DFLT_OUT );
/*-=-=-=-get the parameters and mark the flag-=-=-=-*/
for( i=1 ; i {
if( argv[i][0] != '-' )
{
fprintf( stderr , Unknown argument %s .\n , argv[i] );
exit(1);
}
else
{
switch( argv[i][1] )
{
case 'h' :
_help();
exit(0);
break ;
case 'l' :
flag |= LIST ;
break ;
case 'a' :
flag |= AVER ;
break ;
case 'x' :
flag |= MAX ;
break ;
case 'n' :
flag |= MIN ;
break ;
case 'i' :
flag |= INPUT ;
i++ ;
if( i >= argc )
break ;
if( argv[i][0] != '-' )
{
/*-=-=-=-get input file name-=-=-=-*/
strcpy( in_fname , argv[i] );
break ;
}
else
{
i-- ;
break ;
}
case 'o' :
flag |= OUTPUT ;
i++ ;
if( i >= argc )
break ;
if( argv[i][0] != '-' )
{
/*-=-=-=-get output file name-=-=-=-*/
strcpy( out_fname , argv[i] );
break ;
}
else
{
i-- ;
break ;
}
default :
fprintf( stderr , Unknown parameter %s .\n , argv[i] );
exit(1);
break ;
}
}
}
/*-=-=-=-=-=-Input data-=-=-=-=-=-*/
if( (flag & INPUT) == INPUT )
{
/*-=-=-=-opne input file stream-=-=-=-*/
fp = fopen( in_fname , r );
if( fp==NULL )
{
fprintf( stderr , %s not found or not useable .\n , in_fname );
exit(1);
}
}
if( (flag & INPUT) != INPUT )
{
/*-=-=-=-input from keyboard-=-=-=-*/
while( printf( Now input students' score :\n ) )
{
if( ( printf( Name : ) , scanf( %s , name)!=1 )
|| ( printf( C1 : ) , scanf( %d , &c1 )!=1 )
|| ( printf( C2 : ) , scanf( %d , &c2 )!=1 )
|| ( printf( C3 : ) , scanf( %d , &c3 )!=1 )
|| ( printf( C4 : ) , scanf( %d , &c4 )!=1 )
|| ( printf( C5 : ) , scanf( %d , &c5 )!=1 ) )
break ;
push( &head, name, c1, c2, c3, c4, c5 ) ;
}
}
else
{
/*-=-=-=-input from file-=-=-=-*/
while( !feof( fp ) )
{
if( fscanf( fp , %s , name ) != 1
|| fscanf( fp , %d , &c1 )!=1
|| fscanf( fp , %d , &c2 )!=1
|| fscanf( fp , %d , &c3 )!=1
|| fscanf( fp , %d , &c4 )!=1
|| fscanf( fp , %d , &c5 )!=1 )
break ;
push( &head, name, c1, c2, c3, c4, c5 ) ;
}
}
if( (flag & INPUT) == INPUT )
{
/*-=-=-=-close input file stream-=-=-=-*/
fclose( fp );
}
/*-=-=-=-claculate total and average score for each student-=-=-=-*/
ndata = stu_ttl_aver( head );
if( (flag & OUTPUT) != OUTPUT )
{
;
/*-=-=-=-Output to screen-=-=-=-*/
}
else
{
/*-=-=-=-Output to file , open output file stream-=-=-=-*/
fp = fopen( out_fname , w );
if( fp==NULL )
{
fprintf( stderr , %s not useable .\n , out_fname );
exit(1);
}
}
if( (flag & LIST) == LIST )
{
/*-=-=-=-make a list-=-=-=-*/
pr = head ;
while( pr != NULL )
{
if( (flag & OUTPUT) != 0 )
{
/*-=-=-=-outout to file-=-=-=-*/
fprintf( fp , Name : %s\n , pr->name );
fprintf( fp , %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( Name : %s\n , pr->name );
printf( %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
pr = pr->next ;
}
}
if( (flag & MAX) == MAX )
{
/*-=-=-=-search max-=-=-=-*/
pr = srch_max( head );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , MAX : %s\n , pr->name );
fprintf( fp , %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( MAX : %s\n , pr->name );
printf( %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
}
if( (flag & MIN) == MIN )
{ /*-=-=-=-search min-=-=-=-*/
pr = srch_min( head );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , MIN : %s\n , pr->name );
fprintf( fp , %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( MIN : %s\n , pr->name );
printf( %3d %3d %3d %3d %3d\t%4d\t%3.2f\n ,
pr->c1 ,
pr->c2 ,
pr->c3 ,
pr->c4 ,
pr->c5 ,
pr->total ,
pr->aver );
}
}
if( (flag & AVER) == AVER )
{
/*-=-=-=-claculate average value for each class-=-=-=-*/
class_aver( head , &ac1 , &ac2 , &ac3 , &ac4 , &ac5 );
if( (flag & OUTPUT) == OUTPUT )
{
/*-=-=-=-output to file-=-=-=-*/
fprintf( fp , Average class :\n );
fprintf( fp , %3.2f\t%3.2f\t%3.2f\t%3.2f\t%3.2f\n ,
ac1 , ac2 , ac3 , ac4 , ac5 );
}
else
{
/*-=-=-=-output to screen-=-=-=-*/
printf( Average class :\n );
printf( %3.2f\t%3.2f\t%3.2f\t%3.2f\t%3.2f\n ,
ac1 , ac2 , ac3 , ac4 , ac5 );
}
}
if( (flag & OUTPUT)==OUTPUT )
{
/*-=-=-=-close output file stream-=-=-=-*/
fclose( fp );
}
/*-=-=-=-delete link to clear memory-=-=-=-*/
while( head->next != NULL )
{
pr = head->next ;
free( (void *)head );
head = pr ;
}
free( (void *)head );
return 0;
}
/*-=-=-=-end of ssm.c-=-=-=-*/
[c语言学生成绩管理系统]C语言学生成绩管理系统 三
贴main函数那部分的时候居然说我贴子里有禁用词!我晕。
查了半天,原来是这么回事。我用的一个变量flag,原来是写的缩写,被当成禁用词了。
继续。下面是测试数据:
SyuuI
100 90 80 97 88
FukataKyouko
99 78 96 99 60
MatudaJyonko
89 90 67 89 95
SakuraiHanamiti
78 98 94 79 100
下面是Makefile
CC = gcc
TAR = ssm
BINPATH = $(HOME)/bin
PROG: .c.o
$(CC) $(TAR).o -o $(TAR)
.c.o:
$(CC) $(TAR).c -c -o $(TAR).o
clean:
rm -f core* *~ *.o
binclean:
rm -f $(TAR)
install:
cp $(TAR) $(BINPATH)[c语言学生成绩管理系统]C语言学生成绩管理系统——注意事项
本文仅供参考。
篇五 : 学生成绩管理系统(C语言)
C语言课程设计报告
一、实践的目的和要求
加深对《C语言程序设计》课程所学知识的理解,进一步巩固C语言讲法规则。学会编制结构清晰、风格良好、数据结构适当的C语言程序,从而具备解决综合性实际问题的能力
二、实践内容
在熟练掌握C语言的基本知识:数据类型(整形、实型、字符型、指针、数组、结构等);运算类型(算术运算、逻辑运算、自增自减运算、赋值运算等);程序结构(顺序结构、判断选择结构、循环结构);函数的使用,结构体和文件的操作等。
三、设计说明
学生成绩管理系统
建立一个学生成绩管理系统。
程序运行时显示一个简单的菜单。
例如:
1.信息输入(INPUT)
2.信息的删除与修改
3.显示当前学生成绩的记录信息,若无记录,则给出提示信息
4.学生或者各个班级各门课程总分、平均分、最低分、最高分等的统计
5.可以按照班级、姓名、性别、分数(可以有区间)等方式进行查询
6.具有良好的交互功能
7.能使用图形函数进行简单的界面设计
8.具有良好的纠错功能
9.退出等等程序:
#include /*文件操作(读文件)*/
#include
#include /*其它说明*/
#include /*字符串函数*/
#include /*内存操作函数*/
#include /*屏幕操作函数*/
#include /*字符操作函数*/
#include /*动态地址分配函数*/
#include
#define LEN sizeof(STUDENT)
#define N 3
typedef struct stu /*定义结构体数组用于缓存数据*/
{char grade[6];
char name[5];
char sex[4] ;
int score[N];
int sum;
float average;
int order;
struct stu *next;
}STUDENT;
/*以下是函数原型*/
STUDENT *init(); /*初始化函数*/
STUDENT *create(); /*创建链表*/
STUDENT *delete(STUDENT *head); /*删除记录*/
STUDENT *sort(STUDENT *head); /*按平均分排序*/
void print(STUDENT *head); /* 显示所有记录*/
void name(STUDENT *head); /*姓名查找*/
void grade(STUDENT *head); /*班级查找*/
void sex(STUDENT *head); /*性别查找*/
void average(STUDENT *head); /*按平均分查找在那个分数里*/
STUDENT *statistciam(STUDENT *head);/*统计记录*/
void save(STUDENT *head); /*保存文件*/
STUDENT *load(); /*读文件*/
STUDENT *insert(STUDENT *head,STUDENT *new); /*插入记录*/
int menu_select(); /*菜单函数*/
int menu_search(); /*查询菜单*/
void code(); /*密码验证*/
/*主函数界面*/
main()
{
int i,j,n,m;
STUDENT *head,new; /*链表定义头指针*/
randomize();/*开启扬声器,发出声音*/
while(!bioskey(1))
{
j=rand()*5000;
sound(j);
delay(10);
}
nosound();/*关闭声音文件*/
code();/*密码输入*/
clrscr(); /*清屏*/
for(;;) /*无限循环*/
{
switch(menu_select()) /*调用主菜单函数,返回值整数作开关语句的条件*/
{ /*值不同,执行的函数不同,break 不能省略*/
case 0:head=init();break; /*执行初始化*/
case 1:head=create();break; /*创建链表*/
case 2:head=delete(head);break; /*删除记录*/
case 3:print(head);break; /*显示全部记录*/
case 4:
loop:
printf("sreach:\n 1.grade\n 2.name\n 3.sex\n 4.average\n 5.quit\n Enter you choice(0~5):");
scanf("%d",&n);
switch(n)
{
case 1:grade(head);
goto loop;
case 2:name(head);
goto loop;
case 3:sex(head);
goto loop;
case 4:average(head);
goto loop;
case 5: break;
}
break;
/*查找记录*/
case 5:sort(head);break; /*排序*/
case 6:save(head);break; /*保存文件*/
case 7:head=load(); break; /*读文件*/
case 8:head=insert(head,&new); break; /*插入记录*/
case 9:head=statistciam(head); break; /*统计记录*/
case 10:exit(0); /*如菜单返回值为10程序结束*/
}
}
}
/*密码输入*/
void code()
{
int i;
char number[20];
const w=10;
printf("\n\t\t\t--------------------------------------------------");
printf("\n\t\t\tBecause this system is busywork,Code is: 123456");
printf("\n\t\t\t----------------------------------------------- ");
printf("\n");
printf("\n");
printf("\n");
printf("\n");
printf("\n");
printf("\n");
printf("\n\t*********************************");
printf("\n\t Please Enter The Code : ");
printf("\n\t*********************************\n");
scanf("%s",number);
printf("\n\t\t\tExamining!");
for(i=0;i<=w;i++)
{
printf("*");
}
if(strcmp(number,"123456")==0)
{
printf("\n\t\t\tCode is right!press any key enter menu......");
clrscr();
}
else
{
printf("\n\t\t\tCode is wrong!Please enter again : ");
clrscr();
code();
}
}
/*初始化函数*/
STUDENT *init()
{
return NULL; /*返回空指针*/
}
/*菜单选择函数*/
menu_select()
{
char *menu[]={"********************************************",
" Welcome to ",
" The student score manage system!",
"*****************MENU***********************", /*定义菜单字符串数组*/
" 0. Init list", /*初始化*/
" 1. Input list", /*输入记录*/
" 2. Delete a record from list", /*从表中删除记录*/
" 3. Print list ", /*显示当前学生成绩的记录信息*/
" 4. Search record ", /*查询学生记录*/
" 5. Sort to make new a file ", /*排序*/
" 6. Save the file", /*将单链表中记录保存到文件中*/
" 7. Load the file", /*从文件中读入记录*/
" 8. insert record to list ", /*插入记录到表中*/
" 9. statistciam record to list ", /*统计记录到表中*/
" 10. Quit", /*退出*/
"********************************************",
" Producer:ZengWenyan ZhaoJingxiu ",
" Faculty Adviser:XiaoFengrui ",}; /*退出*/
char s[3]; /*以字符形式保存选择号*/
int c,i; /*定义整形变量*/
textbackground(MAGENTA); /*设置背景颜色为粉色*/
gotoxy(1,50); /*移动光标*/
printf("press any key enter menu......\n"); /*压任一键进入主菜单*/
getch(); /*输入任一键*/
clrscr(); /*清屏幕*/
gotoxy(1,1); /*移动光标*/
textcolor(YELLOW); /*设置文本显示颜色为黄色*/
textbackground(BLUE); /*设置背景颜色为蓝色*/
gotoxy(15,2); /*移动光标*/
putch(0xc9); /*输出左上角边框┏*/
for(i=1;i<44;i++)
putch(0xcd); /*输出上边框水平线*/
putch(0xbb); /*输出右上角边框 ┓*/
for(i=3;i<23;i++)
{
gotoxy(15,i);putch(0xba); /*输出左垂直线*/
gotoxy(59,i);putch(0xba);
} /*输出右垂直线*/
gotoxy(15,22);putch(0xc8); /*输出左上角边框┗*/
for(i=1;i<44;i++)
putch(0xcd); /*输出下边框水平线*/
putch(0xbc); /*输出右下角边框┛*/
window(16,3,58,21); /* 制作显示菜单的窗口,大小根据菜单条数设计*/
clrscr(); /*清屏*/
for(i=0;i<18;i++) /*输出主菜单数组*/
{
gotoxy(1,i+1);
cprintf("%s",menu[i]);
}
textbackground(BLACK); /*设置背景颜色为黑色*/
window(1,1,80,25); /*恢复原窗口大小*/
gotoxy(10,23); /*移动光标*/
do{
printf("\n Enter you choice(0~10):"); /*在菜单窗口外显示提示信息*/
scanf("%s",s); /*输入选择项*/
c=atoi(s); /*将输入的字符串转化为整形数*/
}while(c<0||c>10); /*选择项不在0~10之间重输*/
return c; /*返回选择项,主程序根据该数调用相应的函数*/
}
/*输入函数*/
STUDENT *create()
{int i,s;
STUDENT *head=NULL,*p; /* 定义函数.此函数带回一个指向链表头的指针*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
for(;;)
{p=(STUDENT *)malloc(LEN); /*开辟一个新的单元*/
if(!p) /*如果指针p为空*/
{printf("\nOut of memory."); /*输出内存溢出*/
return (head); /*返回头指针,下同*/
}
printf("Enter the grade(0:list end):");
scanf("%s",p->grade);
if(p->grade[0]=='0') break; /*如果班级首字符为0则结束输入*/
printf("Enter the name:");
scanf("%s",p->name);
do{
printf("Enter the sex(M or W):");
scanf("%s",&p->sex[0]);
if(p->sex[0]!='M'&&p->sex[0]!='W')
printf("Data error,please enter again.\n");
}while(p->sex[0]!='M'&&p->sex[0]!='W');
printf("Please enter the %d scores\n",3); /*提示开始输入成绩*/
s=0; /*计算每个学生的总分,初值为0*/
for(i=0;i
{
do{
printf("score%d:",i+1);
scanf("%d",&p->score[i]);
if(p->score[i]<0 || p->score[i]>100) /*确保成绩在0~100之间*/
printf("Data error,please enter again.\n");
}while(p->score[i]<0 || p->score[i]>100);
s=s+p->score[i]; /*累加各门成绩*/
}
p->sum=s; /*将总分保存*/
p->average=(float)s/3; /*先用强制类型转换将s转换成float型,再求平均值*/
p->order=0; /*未排序前此值为0*/
p->next=head; /*将头结点做为新输入结点的后继结点*/
head=p; /*新输入结点为新的头结点*/
}
return(head);
}
/*删除记录函数*/
STUDENT *delete(STUDENT *head)
{int n;
STUDENT *p1,*p2; /*p1为查找到要删除的结点指针,p2为其前驱指针*/
char c,s[6]; /*s[6]用来存放班级,c用来输入字母*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
printf("Please enter the deleted grade: ");
scanf("%s",s);
p1=p2=head; /*给p1和p2赋初值头指针*/
while(strcmp(p1->grade,s) && p1 != NULL) /*当记录的班级不是要找的,或指针不为空时*/
{p2=p1; /*将p1指针值赋给p2作为p1的前驱指针*/
p1=p1->next; /*将p1指针指向下一条记录*/
}
if(strcmp(p1->grade,s)==0) /*班级找到了*/
{printf("**************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p1->grade,p1->name,p1->score[0],p1->score[1],p1->score[2],p1->sum,p1->average,p1->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
printf("Are you sure to delete the student Y/N ?"); /*提示是否要删除,输入Y删除,N则退出*/
for(;;)
{scanf("%c",&c);
if(c=='n'||c=='N') break; /*如果不删除,则跳出本循环*/
if(c=='y'||c=='Y')
{
if(p1==head) /*若p1==head,说明被删结点是首结点*/
head=p1->next; /*把第二个结点地址赋予head*/
else
p2->next=p1->next; /*否则将一下结点地址赋给前一结点地址*/
n=n-1;
printf("\nNum %s student have been deleted.\n",s);
printf("Don't forget to save.\n");break; /*删除后就跳出循环*/
}
}
}
else
printf("\nThere is no num %s student on the list.\n",s); /*找不到该结点*/
return(head);
}
/* 显示全部记录函数*/
void print(STUDENT *head)
{int i=0; /* 统计记录条数*/
STUDENT *p; /*移动指针*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
p=head; /*初值为头指针*/
printf("\n************************************STUDENT************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Rec | Grade | Name | Sc1 | Sc2 | Sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
while(p!=NULL)
{
i++;
printf("| %3d | %4s | %-4s | %3d | %3d | %3d | %3d | %4.2f| %-5d |\n",
i, p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
p=p->next;
}
printf("-------------------------------------------------------------------------------\n");
printf("**************************************END**************************************\n");
}
/*姓名查找记录函数*/
void name(STUDENT *head)
{STUDENT *p; /* 移动指针*/
char s[5]; /*存放姓名用的字符数组*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
printf("Please enter name for searching.\n");
scanf("%s",s);
p=head; /*将头指针赋给p*/
while(strcmp(p->name,s) && p != NULL) /*当记录的姓名不是要找的,或指针不为空时*/
p=p->next; /*移动指针,指向下一结点*/
if(p!=NULL) /*如果指针不为空*/
{printf("\n*************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d|\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else
printf("\nThere is no name %s student on the list.\n",s); /*显示没有该学生*/
}
/*班级查找记录函数*/
void grade(STUDENT *head)
{STUDENT *p; /* 移动指针*/
char s[6]; /*存放班级用的字符数组*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
printf("Please enter grade for searching.\n");
scanf("%s",s);
p=head; /*将头指针赋给p*/
while(strcmp(p->grade,s) && p != NULL) /*当记录班级不是要找的,或指针不为空时*/
p=p->next; /*移动指针,指向下一结点*/
if(p!=NULL) /*如果指针不为空*/
{printf("\n*************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else
printf("\nThere is no grade %s student on the list.\n",s); /*显示没有该学生*/
}
/*性别查找记录函数*/
void sex(STUDENT *head)
{STUDENT *p; /* 移动指针*/
char s[4]; /*存放性别用的字符数组*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
printf("Please enter sex for searching.\n");
scanf("%s",s);
p=head; /*将头指针赋给p*/
while(strcmp(p->sex,s) && p != NULL) /*当记录的性别不是要找的,或指针不为空时*/
p=p->next; /*移动指针,指向下一结点*/
if(p!=NULL) /*如果指针不为空*/
{printf("\n*************************************FOUND************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else
printf("\nThere is no sex %s student on the list.\n",s); /*显示没有该学生*/
}
/* 用平均分进行分数段查找 */
void average(STUDENT *head)
{
STUDENT *p; /* 移动指针*/
clrscr();
textbackground(MAGENTA);
textcolor(BLUE);
p=head; /*将头指针赋给p*/
if(p!=NULL&&p->average<60&&p->average>0) /*如果指针不为空且平均分在0-60之间*/
{
printf("\n**********************************not pass************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else if(p!=NULL&&p->average<70&&p->average>=60) /*如果指针不为空且平均分在60-70之间*/
{
printf("\n**********************************60-70************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else if(p!=NULL&&p->average<80&&p->average>=70) /*如果指针不为空且平均分在70-80之间*/
{
printf("\n**********************************70-80************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else if(p!=NULL&&p->average<90&&p->average>=80) /*如果指针不为空且平均分在80-90之间*/
{
printf("\n**********************************80-90************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else if(p!=NULL&&p->average<100&&p->average>=90) /*如果指针不为空且平均分在90-100之间*/
{
printf("\n**********************************90-100************************************\n");
printf("-------------------------------------------------------------------------------\n");
printf("| Grade | Name | sc1 | sc2 | sc3 | Sum | Ave | Order |\n");
printf("-------------------------------------------------------------------------------\n");
printf("| %4s | %4s | %3d | %3d | %3d | %3d | %4.2f | %-5d |\n",
p->grade,p->name,p->score[0],p->score[1],p->score[2],p->sum,p->average,p->order);
printf("-------------------------------------------------------------------------------\n");
printf("***************************************END**************************************\n");
}
else
printf("\nThere is not average student on the list.\n"); /*显示没有该学生*/
}
/*保存数据到文件函数*/
void save(STUDENT *head)
{FILE *fp; /*定义指向文件的指针*/
STUDENT *p; /* 定义移动指针*/
char outfile[10];
printf("Enter outfile name,for example c:\\score\n");
scanf("%s",outfile);
if((fp=fopen(outfile,"wb"))==NULL) /*为输出打开一个二进制文件,为只写方式*/
{
printf("Cannot open the file\n");
return; /*若打不开则返回菜单*/
}
printf("\nSaving the file......\n");
p=head; /*移动指针从头指针开始*/
while(p!=NULL) /*如p不为空*/
{
fwrite(p,LEN,1,fp); /*写入一条记录*/
p=p->next; /*指针后移*/
}
fclose(fp); /*关闭文件*/
printf("Save the file successfully!\n");
}
/* 从文件读数据函数*/
STUDENT *load()
{STUDENT *p1,*p2,*head=NULL; /*定义记录指针变量*/
FILE *fp; /* 定义指向文件的指针*/
char infile[10];
printf("Enter infile name,for example c:\\score\n");
scanf("%s",infile);
if((fp=fopen(infile,"rb"))==NULL) /*打开一个二进制文件,为只读方式*/
{
printf("Can not open the file.\n");
return(head);
}
printf("\nLoading the file!\n");
p1=(STUDENT *)malloc(LEN); /*开辟一个新单元*/
if(!p1)
{
printf("Out of memory!\n");
return(head);
}
head=p1; /*申请到空间,将其作为头指针*/
while(!feof(fp)) /*循环读数据直到文件尾结束*/
{
if(fread(p1,LEN,1,fp)!=1) break; /*如果没读到数据,跳出循环*/
p1->next=(STUDENT *)malloc(LEN); /*为下一个结点开辟空间*/
if(!p1->next)
{
printf("Out of memory!\n");
return (head);
}
p2=p1; /*使p2指向刚才p1指向的结点*/
p1=p1->next; /*指针后移,新读入数据链到当前表尾*/
}
p2->next=NULL; /*最后一个结点的后继指针为空*/
fclose(fp);
printf("You have success to read data from the file!\n");
return (head);
}
/*按平均分排序函数*/
STUDENT *sort(STUDENT *head)
{int i=0; /*保存名次*/
STUDENT *p1,*p2,*t,*temp; /*定义临时指针*/
temp=head->next; /*将原表的头指针所指的下一个结点作头指针*/
head->next=NULL; /*第一个结点为新表的头结点*/
while(temp!=NULL) /*当原表不为空时,进行排序*/
{
t=temp; /*取原表的头结点*/
temp=temp->next; /*原表头结点指针后移*/
p1=head; /*设定移动指针p1,从头指针开始*/
p2=head; /*设定移动指针p2做为p1的前驱,初值为头指针*/
while(t->averageaverage&&p1!=NULL) /*作成绩平均分比较*/
{
p2=p1; /*待排序点值小,则新表指针后移*/
p1=p1->next;
}
if(p1==p2) /*p1==p2,说明待排序点值大,应排在首位*/
{
t->next=p1; /*待排序点的后继为p*/
head=t; /*新头结点为待排序点*/
}
else /*待排序点应插入在中间某个位置p2和p1之间,如p为空则是尾部*/
{
t->next=p1; /*t的后继是p1*/
p2->next=t; /*p2的后继是t*/
}
}
p1=head; /*已排好序的头指针赋给p1,准备填写名次*/
while(p1!=NULL) /*当p1不为空时,进行下列操作*/
{
i++; /*结点序号*/
p1->order=i; /*将结点序号赋值给名次*/
p1=p1->next; /*指针后移*/
}
printf("Sorting is sucessful.\n"); /*排序成功*/
return (head);
}
/*插入记录函数*/
STUDENT *insert(STUDENT *head,STUDENT *new)
{STUDENT *p0,*p1,*p2;
int n,sum1,i;
p1=head; /*使p1指向第一个结点*/
p0=new; /*p0指向要插入的结点*/
printf("\nPlease enter a new record.\n"); /*提示输入记录信息*/
printf("Enter the grade:");
scanf("%s",new->grade);
printf("Enter the name:");
scanf("%s",new->name);
do{
printf("Enter the sex(M or W):");
scanf("%s",&new->sex[0]);
if(new->sex[0]!='M'&&new->sex[0]!='W')
printf("Data error,please enter again.\n");
}while(new->sex[0]!='M'&&new->sex[0]!='W');
printf("Please enter the %d scores.\n",3);
sum1=0; /*保存新记录的总分,初值为0*/
for(i=0;i<3;i++)
{
do{
printf("score%d:",i+1);
scanf("%d",&new->score[i]);
if(new->score[i]>100||new->score[i]<0)
printf("Data error,please enter again.\n");
}while(new->score[i]>100||new->score[i]<0);
sum1=sum1+new->score[i]; /*累加各门成绩*/
}
new->sum=sum1; /*将总分存入新记录中*/
new->average=(float)sum1/3;
new->order=0;
if(head==NULL) /*原来的链表是空表*/
{head=p0;p0->next=NULL;} /*使p0指向的结点作为头结点*/
else
{while((p0->averageaverage)&&(p1->next!=NULL))
{p2=p1; /*使p2指向刚才p1指向的结点*/
p1=p1->next; /*p1后移一个结点*/
}
if(p0->average>=p1->average)
{if(head==p1)head=p0; /*插到原来第一个结点之前*/
else p2->next=p0; /*插到p2指向的结点之后*/
p0->next=p1;}
else
{p1->next=p0;p0->next=NULL;} /*插到最后的结点之后*/
}
n=n+1; /*结点数加1*/
head=sort(head); /*调用排序的函数,将学生成绩重新排序*/
printf("\nStudent %s have been inserted.\n",new->name);
printf("Don't forget to save the new file.\n");
return(head);
}
/*统计学生成绩函数*/
STUDENT *statistciam(STUDENT *head)
{
float sum1=0,sum2=0,sum3=0,ave1=0,ave2=0,ave3=0,max=0,min;
STUDENT *p;
int x,y=0,i=0;
p=head;
printf("1.sum and average\n2.single of average\n3.max of sum\n4.min of sum\n");
scanf("%d",&x);
getchar();
switch(x)
/*用switch语句实现功能选择*/
{
case 1: if(head==NULL)
{printf("\n There are not anyone's information !\n");return(head);}/*链表为空*/
else
{
printf("---------------------------------------------------------\n");
printf("|Grade\t|Name\t|Sc1\t|Sc2\t|Sc3\t|Sum\t|Ave\t|\n");
printf("---------------------------------------------------------\n");/*打印表格域*/
while(p!=NULL)
{
sum1=p->score[0]+p->score[1]+p->score[2]; /*计算个人总分*/
ave1=sum1/3;/*计算个人平均分*/
printf("|%s\t|%s\t|%.1d\t|%.1d\t|%.1d\t|%.1f\t|%.1f\t|\n",p->grade,p->name,p->score[0],p->score[1],p->score[2],sum1,ave1);
/*打印结果*/
printf("---------------------------------------------------------\n");/*打印表格域*/
p=p->next;}
}
return(head);
case 2: if(head==NULL)
{printf("\nThere are not anyone's information !\n");return(head);}/*链表为空*/
while(p!=NULL)
{
sum1=sum1+p->score[0];
sum2=sum2+p->score[1];
sum3=sum3+p->score[2];/*计算总分*/
y=y+1;
ave1=sum1/y;
ave2=sum2/y;
ave3=sum3/y;/*计算平均分*/
p=p->next;/*使p指向下一个结点*/
}
printf("score1 average is%.1f\n",ave1);
printf("score2 average is%.1f\n",ave2);
printf("score3 average is%.1f\n",ave3);/*打印结果*/
return(head);
case 3:
if(head==NULL)
{printf("\nThere are not anyone's information !\n");return(head);}/*链表为空*/
max=p->score[0]+p->score[1]+p->score[2];
while(i
{
i=i+1;
sum1=p->score[0]+p->score[1]+p->score[2]; /*计算个人总分*/
if(max
max=sum1;
p=p->next;
}
printf("max of sum:%.1f",max);
printf("\n");
return(head);
case 4: if(head==NULL)
{printf("\nThere are not anyone's information !\n");return(head);}/*链表为空*/
while(p!=NULL)
{
min=p->score[0]+p->score[1]+p->score[2];
while(p!=NULL)
{sum2=p->score[0]+p->score[1]+p->score[2];
if(min>sum2)
min=sum2;
p=p->next;
}
}
printf("min of sum:%.1f",min);
printf("\n");
return(head);
default :printf("Data error,please enter again!\n");
}
return(head);
}
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