c 语言编程：黑色星期五

#include <stdio.h>
void main()
{
int y, m, w;
int count = 0;
scanf("%d", &y);
int c=y/100;
y= y - c * 100; //分离世纪与年
for (m = 1; m <= 12; ++m)
{
w=y+y/4+c/4-