实验二（2）

#include<stdio.h>
int main(){
 int year;
 printf("input the year\n");
 scanf("%d",&year);
 if((year%4==0&&year%100!=0)||(year%400==0)){
  printf("year:%d,month:2,days:29\n",year);
 }else{
  printf("year:%d,month:2,days:28\n",year);
 }
   return 0;
}