Problem Description
Today is Saturday, 17th Nov,2007. Now, if i tell you a date, can you tell me what day it is ?
Input
There are multiply cases.
One line is one case.
There are three integers, year(0<year<10000), month(0<=month<13), day(0<=day<32).
Output
Output one line.
if the date is illegal, you should output "illegal". Or, you should output what day it is.
Sample Input
2007 11 17
Sample Output
Saturday
#include
int main ()
{
int y, m, d, c, w;
printf ("输入年 月 日（空格间隔）：");
scanf ("%d %d %d", &y, &m, &d);
if (m ==1 || m == 2) { //判断月份是否为1或2
y--;
m += 12;
}
c = y / 100;
y = y - c * 100;
w = (c / 4) - 2 * c + (y + y / 4) + (13 * (m + 1) / 5) + d - 1;
while (w < 0) w += 7;
w %= 7;
if (w == 0) printf ("星期日");
else printf ("星期%d", w);
return 0;
}
/* #include 后面 stdio.h 库文件用<>括起来 这里不让打出来特说明一下*/