Question

用Microsoft Visual C++ 6.0道编程题 请将自己设计的写出来

从键盘输入任意一个整数 判断其是否为偶数

Answer 1

#include <iostream>
using namespace std;
int main()
{
    int Num;
    char ch = 'a';
    do 
    {
        cout<<"输入一个整数"<<endl;
        if (cin>>Num)
        {
            if (Num%2)
            {
                cout<<Num<<" 不是偶数"<<endl;
            }
            else
            {
                cout<<Num<<" 是偶数"<<endl;
            }
        }
        else//输入异常
        {
            ch = getchar();
            if (ch != 'q')
            {
                cout<<"输入有误，请输入一个整数，或按字母q退出"<<endl;
                cin.clear();//这两句清空输入流
                cin.sync();
            }
        }
    } while (ch != 'q');

    return 0;
}

Answer 2

#include<iostream.h>
void main()
{
int x;
cin>>x;
if(x%2==0)
cout<<x<<"是偶数"<<endl;
else
cout<<x<<"不是偶数"<<endl;
}

Answer 3

#include "iostream"
using namespace std;

void main()
{
    int a = 0;
    cin>>a;
    if( a != 0 && a%2 == 0 )
    {
        cout <<a<<" 是个偶数"<<endl;
    }
}

Answer 4

应该增加循环判断输入为整数

Answer 5

main(){
scanf("%d", i);
return i%2==0;
}