//switch case

int i=int.Parse(Console.ReadLine());

switch(i)

{

case 1:

console.WriteLine("星期一");

break;

case 2:

console.WriteLine("星期二");

break;

case 3:

console.WriteLine("星期三");

break;

case 4:

console.WriteLine("星期四");

break;

case 5:

console.WriteLine("星期五");

break;

default:

console.WriteLine("你输入的可能不正确");

break;

swith case