编辑?/p>
word
经典
C
语言源代?/p>
1
?/p>
(1)
某年某月某日是星期几
#include<stdio.h>
int main()
{
int year, month, day;
while (scanf_s("%d%d%d", &year, &month, &day) != EOF)
{
if (month == 1 || month == 2)//
判断
month
是否?/p>
1
?/p>
2
{
year--;
month += 12;
}
int c = year / 100;
int y = year - c * 100;
int week = (c / 4) - 2 * c + (y + y / 4) + (13 * (month + 1) / 5)
+ day - 1;