Console.Write("输入年：");
int year = Convert.ToInt32(Console.ReadLine());
Console.Write("输入月:");
int month = Convert.ToInt32(Console.ReadLine());
Console.Write("输入日:");
int date = Convert.ToInt32(Console.ReadLine());
int day = 0;
switch (month)
{
case 12:
day = 30;
goto case 11;
case 11:
day = day + 31;
goto case 10;
case 10:
day = day + 30;
goto case 9;
case 9:
day = day + 31;
goto case 8;
case 8:
day = day + 31;
goto case 7;
case 7:
day = day + 30;
goto case 6;
case 6:
day = day + 31;
goto case 5;
case 5:
day = day + 30;
goto case 4;
case 4:
day = day + 31;
goto case 3;
case 3:
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
{
day = day + 29;
}
else
{
day = day + 28;
}
goto case 2;
case 2:
day = day + 31;
goto case 1;
case 1:
break;
}
Console.WriteLine("{0}年{1}月{2}日是此年中的第{3}天",year ,month,date,day);
Console.ReadLine();
闷a