Question

这是我想要制作的游戏。你以$ 1500开始游戏，每次你想要玩游戏你必须支付100美元。（选择1来玩）（按2阅读规则）（按3看高分）游戏是一个翻转硬币游戏。当比赛开始时，底池中有4美元。当它开始时，底池中的钱会翻倍，然后再次翻转。当它尾巴时，你可以获得所有的钱。当你的价格低于100美元时，你就会破产（游戏结束）。你回到起始菜单......我希望这个游戏记录你的最高钱（高分）所以这就是我到目前为止所得到的......

public class COINFLIP
{
public static void main(String[] args)
{
int tail = 0;//tail
int head = 0;//head
int x = 0;//tries
while (x < 1)
{
    int coin;//coin
    coin = (int) (Math.random() * 2);
    x++;
    if (coin == 0) {
    headCount++; // int type
    wasHeads = true; // boolean type
    wasTails = false;
  } else {
    tailCount++;
    wasHeads = false; // boolean type
    wasTails = true;
 }
    int sm = 1500;//starting money
    int cm;//current money
    int pm = 4;//money in the pot
    cm = sm - 100 + pm;
}
if (wasHeads)
{
pm = pm * 2;
}
else if (wasTails)
{
System.out.println("Your money is: $" + cm);
}
if (cm < 100);
System.out.println("Sorry, but you are broke!!!");
}
}

错误：

C:\Users\Loyal Xie\Documents\COINFLIP.java:14: error: cannot find symbol
    headCount++; // int type
    ^
symbol:   variable headCount
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:15: error: cannot find symbol
    wasHeads = true; // boolean type
    ^
symbol:   variable wasHeads
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:16: error: cannot find symbol
    wasTails = false;
    ^
symbol:   variable wasTails
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:18: error: cannot find symbol
   tailCount++;
   ^
symbol:   variable tailCount
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:19: error: cannot find symbol
    wasHeads = false; // boolean type
    ^
symbol:   variable wasHeads
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:20: error: cannot find symbol
    wasTails = true;
    ^
symbol:   variable wasTails
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:27: error: cannot find symbol
if (wasHeads)
    ^
symbol:   variable wasHeads
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:27: error: illegal start of type
if (wasHeads)
   ^
C:\Users\Loyal Xie\Documents\COINFLIP.java:29: error: cannot find symbol
pm = pm * 2;
^
symbol:   variable pm
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:29: error: cannot find symbol
pm = pm * 2;
     ^
symbol:   variable pm
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:31: error: cannot find symbol
else if (wasTails)
         ^
symbol:   variable wasTails
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:31: error: illegal start of type
else if (wasTails)
        ^
C:\Users\Loyal Xie\Documents\COINFLIP.java:33: error: cannot find symbol
System.out.println("Your money is: $" + cm);

                                        ^
symbol:   variable cm
location: class COINFLIP
C:\Users\Loyal Xie\Documents\COINFLIP.java:35: error: cannot find symbol
if (cm < 100);
    ^
symbol:   variable cm
location: class COINFLIP
14 errors

但是有很多错误，我的陈述仍然是错误的...我认为问题在if语句中，我认为我仍然无法设置head = true然后在if语句中使用它。 ......有什么想法吗？

Answer 1

如果您更正了缩进，您可能会注意到

if (coin == 0)  
{
    headCount++; // int type   
}
    wasHeads = true; // boolean type

wasHeads不在if语句中，并且将在100％的时间内执行。 wasTails = true;

也是如此

这意味着稍后您的if (wasHeads)测试将始终执行。

另外，为什么在while循环中有这个，因为它只执行一次。

修改

关于您的错误，您需要先定义变量才能使用它们。

例如

headCount++;

需要首先定义为

int headCount = 0;

Answer 2

您对布尔值的分配不在各自的测试用例中（您应该更喜欢简单的else）。等等，

if (coin == 0) {
  headCount++; // int type
  wasHeads = true; // boolean type
  wasTails = false;
} else {
  tailCount++;
  wasHeads = false; // boolean type
  wasTails = true;
}

CoinFlipGame帮助..在if语句中输入True

2 个答案: