[Error] iostream.h: No such file or directory解决办法

错误代码:

#include"iostream.h"int main(void){int ilnput;cout<<"please input a number:"<<endl;cin>>ilnput;cout<<"the number is:"<<ilnput<<endl;}

报错：[Error] iostream.h: No such file or directory

正确代码：

#include<iostream>using namespace std;int main(void){int ilnput;cout<<"please input a number:"<<endl;cin>>ilnput;cout<<"the number is:"<<ilnput<<endl;}

需要添加命名空间，否则会报错：

[Error] 'cout' was not declared in this scope; did you mean 'std::cout'?