📅  最后修改于: 2022-03-11 14:49:15.705000             🧑  作者: Mango
int mark = 50;
switch (mark)
{
case int n when n >= 80:
Console.WriteLine("Grade is A");
break;
case int n when n >= 60:
Console.WriteLine("Grade is B");
break;
case int n when n >= 40:
Console.WriteLine("Grade is C");
break;
default:
Console.WriteLine("Grade is D");
break;
}