3月15上午的函数练习

// 剪子,包袱,锤.游戏
public void youxi()
{
Console.WriteLine("1代表剪刀。");
Console.WriteLine("2代表石头。");
Console.WriteLine("3代表布。");
Console.WriteLine("我出拳：");
int a = int.Parse(Console.ReadLine());
Random ran = new Random();
int b= ran.Next(1, 4);
switch (b)
{
case 1:
Console.WriteLine("电脑出拳:剪刀");
break;
case 2:
Console.WriteLine("电脑出拳:石头");
break;
case 3:
Console.WriteLine("电脑出拳:布");
break;
default:
break;
}
if (a - b == 2||a - b == -1)
{
Console.WriteLine("我输了");
}
if (a - b == 1||a - b ==-2)
{
Console.WriteLine("我赢了");
}

if (a - b == 0)
{
Console.WriteLine("平局");
}
}

static void Main(string[] args)
{
Program x = new Program();
x.youxi();
Console.ReadLine();