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計算某天是一年中的第幾天 很經典

 

很經典的題目:

當給你某個日期,讓你計算該日期在該年中時第幾天。

這裡可以巧用switch語句。

程式如下:

	
	int t_nMon;
	int t_nDay;
	cout << "輸入月:";
	cin >> t_nMon;
	cout << "輸入天:";
	cin >> t_nDay;
         int s_ndays = 0;

	switch(t_nMon-1) 
	{
	case 12:s_ndays += 31;
	case 11:s_ndays += 30;
	case 10:s_ndays += 31;
	case 9:s_ndays += 30;
	case 8:s_ndays += 31;
	case 7:s_ndays += 31;
	case 6:s_ndays += 30;
	case 5:s_ndays += 31;
	case 4:s_ndays += 30;
	case 3:s_ndays += 31;
	case 2:s_ndays += 28;
	case 1:s_ndays += 31;
	}

	s_ndays = s_ndays + t_nDay;
	cout << s_ndays <<endl;