//四年一润,百年不润,四百年再润。 //一三五七八十腊,三十一天永不差 #include<stdio.h> int main(){ int year,month,date; scanf("%d %d %d",&year,&month,&date); int common[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int leap[13]={0,31,29,31,30,31,30,31,31,30,31,30,31}; //判断是否是闰年,计算天数 int day...