C语言编程(程序怎样编写):给定年、月、日,计算该日是该年的第几天,然 ...答:/**程序描述:给定年、月、日,计算该日是该年的第几天,然后计算该日是星期几。*/#include <stdio.h>int mon[]={31,28,31,30,31,30,31,31,30,31,30,31};int leap_year(int n){ if(n%400==0||(n%4==0 && n%100!=0)) return 1; else return 0;}int cal_d...
C语言编写程序,计算n天之后为星期几,假设今天星期六?答:int n;char w[7][10]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};printf("Enter n(int 0<=n)...\nn=");if(scanf("%d",&n)!=1 || n<0){ printf("Input error, exit...\n");return 0;} printf("Today is Saturday, after %d day(s) is...