第二次试验第二项

 

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