Question

C#编写了一个猜拳游戏，为什么总是平局```不比较？

Player p1 = new Player();
Player p2 = new Player();
int i, j, counter1 = 0, counter2 = 0;
char c,d;

public void Man_Com(string s1,string s2)
{
while(c!='n'&& c!='N')
{
p1.PlayedByMan();
p2.PlayedByComputer();

if ((i==1&&j==2)||(i==2&&j==3)||(i==3&&j==1))
{
Console.WriteLine("{0} says : I win!!!",s1);
counter1++;
}
else if ((i==1&&j==3)||(i==2&&j==1)||(i==3&&j==2))
{
Console.WriteLine("{0} says : I lose!!!", s1);
}
else
{
Console.WriteLine("{0} says : Tie……", s1);
}
Console.WriteLine("Do you wanna try again?(Y/N)");
c = Convert.ToChar(Console.ReadLine());
}
Console.WriteLine("You win {0} times!!!", counter1);
}

"1-石头，2-剪刀，3-布"
public void PlayedByMan()
{
int i;
Console.Write("请出拳：");
i = Convert.ToInt32(Console.ReadLine());
}

public void PlayedByComputer()
{
int j;
Random r = new Random();
j = r.Next(1, 4);
}

怎么把i,j传过来呢？````我这个写在了player类里面~``

Answer 1

i,j的值在哪，没有对他们赋值，每次比较的时候都不符合if ((i==1&&j==2)||(i==2&&j==3)||(i==3&&j==1))
{
Console.WriteLine("{0} says : I win!!!",s1);
counter1++;
}
else if ((i==1&&j==3)||(i==2&&j==1)||(i==3&&j==2))
{
Console.WriteLine("{0} says : I lose!!!", s1);
}
当然会最后Console.WriteLine("{0} says : Tie……", s1);
。
你可以在PlayedByMan(); PlayedByComputer();加上对i,j赋值，并注意变量的作用域，不然在外边得到的i和j都是空值。看你程序的样子，估计应该是变量作用域的问题。

Answer 2

using System;

namespace W23
{
class begin1 //定义一个begin1的类;//
{
public static void Main() //主函数//
{
int rock1=3; //rock代表石头//
int jian1=2; //jian 代表剪子//
int bu1=1; //bu代表布//

System.Random rnd=new System.Random();
string aj=Console.ReadLine();

int nbr=(int) rnd.Next(1,3); //随机数//

string rnd1=Convert.ToString(nbr); //将rnd的int转化为string//
string rock=Convert.ToString(rock1); //同上//
string jian=Convert.ToString(jian1); //同上//
string bu=Convert.ToString(bu1);

if ((rnd1==rock)&&(aj==bu)||(rnd1==jian)&&(aj==rock)||(rnd1==bu)&&(aj==jian))
{
Console.WriteLine("你胜利了!");
}
if ((rnd1==rock)&&(aj==jian)||(rnd1==jian)&&(aj==bu)||(rnd1==bu)&&(aj==rock))
{
Console.WriteLine("我出局了!");
}
if ((rnd1==rock)&&(aj==rock)||(rnd1==jian)&&(aj==jian)||(rnd1==bu)&&(aj==bu))
{
Console.WriteLine("我的我是平手!");
}
}
}
}

我重新做了下。。