C语言cout

abc12300

Visual C++ 6.0

#include "stdio.h"
#include "iostream"
#include "stdafx.h"

int main(int argc, char* argv[])
{
        int a;
        cout << "请输入一个数字，按回车结束" << endl;
        cin >> a;
        cout << a << endl;
        return 0;
}



error C2065: 'cout' : undeclared identifier
error C2297: '<<' : illegal, right operand has type 'char [13]'
error C2065: 'endl' : undeclared identifier
error C2065: 'cin' : undeclared identifier
warning C4552: '>>' : operator has no effect; expected operator with side-effect
warning C4552: '<<' : operator has no effect; expected operator with side-effect