C＃否則並不如預期

-3

{ 
     Random r = new Random(); 
     int current = 0; 
     int noa = 0; 
     while (current != 6) { 
      current =r.Next(1,7); 
       noa += 1; 
       Console.WriteLine(current + " has been rolled."); 
     } 

     if (noa >= 10) 
     { 
      Console.WriteLine("You were unlucky and it took you "+ noa + " times to roll a 6!"); 
     } 
     if (noa <= 5) 
     { 
      Console.WriteLine("You were quite lucky and it took you " + noa + " times to roll a 6!"); 
     } 
     else 
     { 
      Console.WriteLine("It took you " + noa + " times to roll a 6!"); 
     } 

     Console.ReadKey(); 


    } 
}

} 工作時NOA（嘗試次數）高於10和它顯示的是這樣出現的問題：C＃否則並不如預期

2已經鋪開。
5已滾動。
4已滾動。
5已滾動。
5已滾動。
1已滾動。
2已滾動。
1已滾動。
3已滾動。
4已滾動。
6已滾動。
你倒黴了，它花了11次滾6！
它花了11次滾6！

而我不想發生的是控制檯寫第二行「花了11次滾6！」。這是怎麼回事？先謝謝你。

來源

2016-02-18 tagito

你必須讓它elseif

if (noa >= 10) 
{ 
    Console.WriteLine("You were unlucky and it took you "+ noa + " times to roll a 6!"); 
} 
else if (noa <= 5) 
{ 
    Console.WriteLine("You were quite lucky and it took you " + noa + " times to roll a 6!"); 
} 
else 
{ 
    Console.WriteLine("It took you " + noa + " times to roll a 6!"); 
}

編輯同意@Kalmino，問題的原因是所有的條件一起處理在一個條件與if... elseif... else分支。

來源

2016-02-18 18:04:06 CarbineCoder

@tagito你有它的方式（與此相反）是將> = 10和下一個if/else視爲兩個單獨的語句。否則，如果該CarbineCoder放入它們全部3個，因此它們將它們評估在一起而不是檢查> = 10，然後檢查<= 5或其他。 –

謝謝，現在我明白了，但如果我需要4個ifs呢？我是否可以通過「if; else if; else if; else;」來做到這一點？？ – tagito

你只需要在最後一個else語句前添加一個else else就可以了 – CarbineCoder

因爲這

if (noa <= 5) 
{ 
    Console.WriteLine("You were quite lucky and it took you " + noa + " times to roll a 6!"); 
} 
else 
{ 
    Console.WriteLine("It took you " + noa + " times to roll a 6!"); 
}

如果noa>5會發生什麼呢？

來源

2016-02-18 18:03:58

C＃否則並不如預期

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