C语言程序,输入年月日算出当天星期几答:include <stdio.h> int main(){ int day,mn,yr,i,days=0,s,k;int mont[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};char wek[][9]={ {'S','u','n','d','a','y'},{'M','o','n','d','a','y'},{'T','u','e','s','d','a','y'},{'W','...
C语言输入年月日计算该日是该年第几天,答://system("pause")main(){ int year,month,day,total,leap; //total总天数 ,leap用于闰年的2月天数 printf("请输入年 月 日(按顺序,中间用空格隔开):");scanf("%d%d%d",&year,&month,&day);if((year%4==0 && year%100!=0) || year%400==0) //判断是否闰年,闰年2月多一天...