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#25-1 OJ 78 Calculate birthday day of the week

2022-08-09 14:47:00 【Ye Xiaobai】

Calculate birthday week

题目描述

题目描述

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输入

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输出

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样例输入

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样例输出

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源代码

#include<stdio.h>
int main()
{
    
	int year, month, day, allday;
	int i, j;
	while (scanf("%d %d %d", &year, &month, &day) != EOF)//Ensure input format requirements
	{
    
		allday = 0;
		for (i = 1; i < year; i++)
		{
    
			if ((i % 4 == 0 && i % 100 != 0) || (i % 400 == 0))//判断闰年
			{
    
				allday += 366;
			}
			else
			{
    
				allday += 365;
			}
		}
		for (i = 1; i < month; i++)
		{
    
			if (i == 2)//In judgment for2时是28还是29
			{
    
				if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
				{
    
					allday += 29;
				}
				else
				{
    
					allday += 28;
				}

			}
			else if (i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12)//Don't know could use an array of,I think it is more simple
			{
    
				allday += 31;
			}
			else
			{
    
				allday += 30;
			}
		}
		allday += day;
		j = allday % 7;
		switch (j)//switchStatement judge week
		{
    
		case 0:printf("Sunday\n"); break;
		case 1:printf("Monday\n"); break;
		case 2:printf("Tuesday\n"); break;
		case 3:printf("Wednesday\n"); break;
		case 4:printf("Thursday\n"); break;
		case 5:printf("Friday\n"); break;
		case 6:printf("Saturday\n"); break;
		}
	}
	return 0;
}