#include <stdio.h> #include <string.h> int main() { int monthinfo[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; int year, month, day; scanf("%d %d %d", &year, &month, &day); //判断当前是否为闰年 if (year % 4 == 0 && year % 100 != 0 || year...