5.3日历问题

问题描述：

代码如下：

/*
 *
 *Declaration:The author of <<Accelerated C++>> has wrote in the end of that book: As you look for reading materimal, keep in mind that books on the shelf do not make you a better programmer. Ultimately, the only way to improve your programming is to write programs.	>这些程序来自一些ACM书籍，作者只为提高编程能力，实现书中例题或练习。如有侵权，请联系作者，作者将立即删除。
 *
 *联系邮箱：mingxinglai#gmail.com
 *
 */

#include <stdio.h>

int type(int);
char week[7][10] = {"Saturday", "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday"};
int year[2]= {365, 366};
int month[2][12] = {31, 28, 31, 30, 31, 30, 31, 31, 30,31, 30, 31,31, 29, 31, 30, 31, 30, 31, 31, 30,31, 30, 31};

int main(int argc, char* argv[])
{
	int days, dayofweek;
	int i = 0, j = 0;
	while( scanf("%d", &days) && days != -1)
	{
		dayofweek = days % 7;
		for( i = 2000; days >= year[type(i)]; i++)
			days -= year[type(i)];	

		for( j = 0; days >= month[type(i)][j]; j++)
			days -= month[type(i)][j];

		//尤其注意这一行代码,要是我自己，还会单独计算年月日，可见经验之匮乏
		printf("%d-%02d-%02d %s\n", i, j + 1, days + 1, week[dayofweek]);

	}
	return 0;
}

int type( int m)
{
	if( m % 4 != 0 || ( m % 100 == 0 && m % 400 != 0 )) return 0;
	else return 1;	
}