#include<stdio.h> int main() { for (int year = 2000; year <= 2500;year++) { if(year%4==0&&year%100!=0) { printf("%d是闰年.\n", year); } else if(year%400==0) { printf("%d是闰年.\n", year); } else printf("%d不是闰年.\n", year); } system("pause"); return 0; }