name：button1 text：剪刀
name：button2 text：石头
name：button3 text：布
name：label1 text：电脑输出：
name：label2 text：玩家输出
name: label3 text:（判断游戏结果）

private void Form1_Load(object sender, EventArgs e)
{
button1.Text = "剪刀";//0是剪刀
button2.Text = "石头";//1是石头
button3.Text = "布";//2是布
label1.Text = "玩家";
label2.Text = "电脑";
label3.Text = "结果";
}
Random r = new Random();//随机数
int a = -1;
private void button1_Click(object sender, EventArgs e)
{
label1.Text = "玩家：剪刀";
a = 0;
Over();
}
private void button2_Click(object sender, EventArgs e)
{
label1.Text = "玩家：石头";
a = 1;
Over();
}
private void button3_Click(object sender, EventArgs e)
{
label1.Text = "玩家：布";
a = 2;
Over();
}
private void Over()//写个方法电脑随机出拳，并判断电脑和玩家的结果
{
int b = r.Next(3);
switch (b)
{
case 0: label2.Text = "电脑：剪刀";
if (a == 0)
{
label3.Text = "平局";
}
if (a == 1)
{
label3.Text = "玩家赢";
}
if (a == 2)
{
label3.Text = "电脑赢";
}
break;
case 1: label2.Text = "电脑：石头";
if (a == 0)
{
label3.Text = "电脑赢";
}
if (a == 1)
{
label3.Text = "平局";
}
if (a == 2)
{
label3.Text = "玩家赢";
}
break;
case 2: label2.Text = "电脑：布";
if (a == 0)
{
label3.Text = "玩家赢";
}
if (a == 1)
{
label3.Text = "电脑赢";
}
if (a == 2)
{
label3.Text = "平局";
}
break;
}
}

喉0Nk42.全世界的人都离开你了我也会在你身边，有地狱我们一起猖獗。