完成 switch 语句，并在末尾添加正确的 keyword 以指定在 switch 语句中没有大小写匹配时运行的代码 .
int day = 3;
switch (@(3))
{
@(4) 1:
Console.WriteLine("Today is Saturday");
break;
@(4) 2:
Console.WriteLine("Today is Sunday");
@(5);
@(7):
Console.WriteLine("Looking forward to the Weekend");
@(5);
}
int day = 3;
switch (day)
{
case 1:
Console.WriteLine("Today is Saturday");
break;
case 2:
Console.WriteLine("Today is Sunday");
break;
default:
Console.WriteLine("Looking forward to the Weekend");
break;
}