实验2.2

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