九度1043 Day of Week

/********************************* 
 *    日期：2013-1-11 
 *    作者：SJF0115 
 *    题号: 九度1043 
 *    题目：Day of Week
 *    来源：http://ac.jobdu.com/problem.php?pid=1043 
 *    结果：AC 
 *    题意： 
 *    总结： 
**********************************/ 
#include <stdio.h>
#include <string.h>

int dayOfMonth[13][2] = 
{
	0,0,
    31,31,
	28,29,
	31,31,
	30,30,
    31,31,
	30,30,
	31,31,
	31,31,
	30,30,
	31,31,
	30,30,
	31,31,
};

char monthName[13][20] = {
	" ",
	"January",
	"February",
	"March",
	"April",
	"May",
	"June",
	"July",
	"August",
	"September",
	"October",
	"November",
	"December"
};
char weekName[8][20] = {
	" ",
	"Sunday",
	"Monday",
	"Tuesday",
	"Wednesday",
	"Thursday",
	"Friday",
	"Saturday"
};
//判断闰年
int leap_year(int year){
	if((year%100 != 0 && year%4 == 0) || (year % 400 == 0)){
		return 1;
	}
	else{
		return 0;
	}
}
//计算天数
int TDay(int day,char month[],int year){

	int day1 = 0,i,j;
	int isleap_year = leap_year(year);

	for(i = 1;i< year;i++){  
        if(leap_year(i)){  
            day1 += 366;  
        }  
        else{  
            day1 += 365;  
        }  
    }  

	for(i = 1;i < 13;i++){
		if(strcmp(month,monthName[i]) == 0){
			break;
		}
	}
	for(j = 1;j < i;j++){
		day1 +=  dayOfMonth[j][isleap_year];
	}
	
	day1 += day;

	return day1%7+1;
}

int main()
{
    int day,year;
	char month[20];
	//freopen("C:\\Users\\SJF\\Desktop\\acm.txt","r",stdin); 
    while(scanf("%d%s%d",&day,month,&year) != EOF)
    {
		printf("%s\n",weekName[TDay(day,month,year)]);
	}
	return 0;
}