蓝桥杯2015-省赛-C/C++-A组2题 星系炸弹

#include<iostream>
#include<cstring>
#include<iomanip>
#include<cmath>
#include<algorithm>
#include<vector>
using namespace std;


bool judge(int y)//判断是不是闰年 
{
    if(y%4==0&&y%100!=0||y%400==0)
    return true;
    else
    return false;
}
int mon[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int main()
{
    int year,month,day;
    int n;
while(    cin>>year>>month>>day>>n)
{

    while(n)
    {
            if(judge(year))
          {
        mon[2]=29;
         }
         else
         mon[2]=28;
        if(day<=mon[month])
        day++;
        if(day>mon[month])
         {
         day=1;
         month++;
        }
        if(month>12)
        {
         year++;
         month=1;
       }
        n--;   
    }
    cout<<year<<"-";
    if(month<10)
    cout<<"0"<<month<<"-";
    else
    cout<<month<<"-";
    if(day<10)
    cout<<"0"<<day<<endl;
    else
    cout<<day<<endl;
  }
}