C# 语句 ---Swtich case (猜拳游戏)

Swtich   case必须与break一起使用。

Random r = new Random();
int a = r.Next(1, 4);//甲选手 随机数
int b = r.Next(1, 4); //乙选手 随机数
string x = "", y = "";
switch (a)
{
case 1:
x = "剪刀";
break;
case 2:
x = "石头";
break;
case 3:
x = "布";
break;
default:
break;
}
Console.WriteLine("甲选手出" + x);
switch (b)
{
case 1:
y = "剪刀";
break;
case 2:
y = "石头";
break;
case 3:
y = "布";
break;
default:
break;
}
Console.WriteLine("乙选手出" + y);

if (a > b)
{
if (a == 3 && b == 1)
{
Console.WriteLine("乙选手赢");
}
else
{
Console.WriteLine("甲选手赢");
}
}
else if (a < b)
{
if (b == 3 && a == 1)
{
Console.WriteLine("甲选手赢");
}
else
{
Console.WriteLine("乙选手赢");
}
}
else
{
Console.WriteLine("甲乙选手平局");
}
Console.ReadLine();