Console.WriteLine("请输入一个年份"); i
nt year = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入一个月份");
int month = Convert.ToInt32(Console.ReadLine());
if (month >= 1 && month <= 12) {
int day = 0;//存储天数
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: day = 31;
break;
case 2:
if ((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0)) {
day = 29; }
else {
day = 28; }
break;
default:
day = 30;
break; }
Console.WriteLine("{0}年{1}月有{2}天", year, month, day); }
else {
Console.WriteLine("月份必须在1~12月之间，程序退出！！！");
