项目2—本月有几天

/*
 *Copyright(c) 2016,烟台大学计算机与控制工程学院
 *All rights reserved.
 *文件名称:my.cpp
 *作    者:张瀚文
 *完成日期:2015年3月15日
 *版 本 号：v1.0
 *
 *问题描述:编程序，输入年份和月份，输出本月有多少天。合理选择分支语句，完成设计任务
 *输入描述:输入年份个月份
 *程序输出:本月有多少天
 */
#include<iostream>
using namespace std;
int main()
{
    int iYear,iMonth;
    cout<<"Please input a year and a month:";
    cin>>iYear>>iMonth;
    if(iYear%4!=0&&iYear%40!=0)
        switch(iMonth)
    {
        case 1:cout<<"the month is 31 days";break;
        case 2:cout<<"the month is 28 days";break;
        case 3:cout<<"the month is 31 days";break;
        case 4:cout<<"the month is 30 days";break;
        case 5:cout<<"the month is 31 days";break;
        case 6:cout<<"the month is 30 days";break;
        case 7:cout<<"the month is 31 days";break;
        case 8:cout<<"the month is 31 days";break;
        case 9:cout<<"the month is 30 days";break;
        case 10:cout<<"the month is 31 days";break;
        case 11:cout<<"the month is 30 days";break;
        case 12:cout<<"the month is 31 days";break;
    }
    else
        switch(iMonth)
    {
       case 1:cout<<"the month is 31 days";break;
        case 2:cout<<"the month is 29 days";break;
        case 3:cout<<"the month is 31 days";break;
        case 4:cout<<"the month is 30 days";break;
        case 5:cout<<"the month is 31 days";break;
        case 6:cout<<"the month is 30 days";break;
        case 7:cout<<"the month is 31 days";break;
        case 8:cout<<"the month is 31 days";break;
        case 9:cout<<"the month is 30 days";break;
        case 10:cout<<"the month is 31 days";break;
        case 11:cout<<"the month is 30 days";break;
        case 12:cout<<"the month is 31 days";break;
    }


    return 0;
}

<img src="http://img.blog.csdn.net/20160319222707608?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />