Question

C++ 输入输出语句实现输出两个整数的和 写个程序 谢谢

Answer 1

#include "iostream.h"

void main()
{
int a,b,c;
cout<<"请输入两个整数，以空格键隔开，回车键结束"<<endl;
cin>>a>>b>>endl;
c=a+b;
cout<<"a+b="<<c<<endl;
}

Answer 2

#include <iostream>
using namespace std;

int main()
{
cout<<"Please Input tow Integer:";
int a = 0;
int b = 0;

cin>> a >> b;
if( cin.fail() ) // 比如说该输入整数你输入了字母
{
cerr<<"Input Error!"<<endl;
return -1;
}

cout<<"the sum is " << a + b << endl;

return 0;
}

Answer 3

#include<iostream>
using namespace std;
int main()
{
int a,b;
while(cin>>a>>b)
cout<<a+b<<endl;
return 0;
}