C++读入并显示整数,为何显示错误

Question

小白一枚，艰难自学ing按照书本和讲解视频敲的代码，不是很理解反馈的错误是什么意思，求大神指教~#include<iostream>using namespace std;int main(){ int radius; cout << "Please enter the radius!\n"; cin >> radius; cout << "The radius is:" << radius << '\n'; cout << "PI is:" << 3.14 << '\n'; cout << "Please enter a different radius!\n"; cin >> radius; cout << "Now the radius is changed to:" << radius << '\n'; return 0;}

Answer 1

你启用了VC的预编译头功能，一般默认是开启到。你需要把标准库头文件加到stdafx.h中，然后再main的cpp文件里包含stdafx.h