当用户输入退出或退出时打破循环c＃

-1

如果用户输入“退出”或“退出”，我无法循环我的程序，使其跳出循环。当用户输入退出或退出时打破循环c＃

当我键入任何字符串时，我的程序崩溃，因为它试图分析字符串输入到一个int。有什么建议？

namespace DiceRolling 
    { 
    /* We’re going to write a program that makes life easier for the player of a game like this. Start the 
    program off by asking the player to type in a number of dice to roll.Create a new Random 
    object and roll that number of dice.Add the total up and print the result to the user. (You should 
    only need one Random object for this.) For bonus points, put the whole program in a loop and allow them to keep typing in numbers 
    until they type “quit” or “exit”. */ 

    class DiceRolling 
    { 
     static void RollDice(int numTries) 
     { 
      Random random = new Random(); 

      //Console.Write("Please enter the number of dice you want to roll: "); 
      //int numTries = Convert.ToInt32(Console.ReadLine()); 
      int sum = 0; 
      int dieRoll; 

      for (int i = 1; i <= numTries; i++) 
      { 
       dieRoll = random.Next(6) + 1; 
       Console.WriteLine(dieRoll); 
       sum += dieRoll; 
      } 
      Console.WriteLine("The sum of your rolls equals: " + sum); 
     } 

     static void Main(string[] args) 
     { 
      while (true) 
      { 
       Console.Write("Please enter the number of dice you want to roll: "); 
       string input = Console.ReadLine(); 
       int numTries = Convert.ToInt32(input); 
       //bool isValid = int.TryParse(input, out numTries); 
       RollDice(numTries); 
       Console.ReadKey(); 
       if (input == "quit" || input == "exit") 
        break; 
      } 
     } 
    } 
}

来源

2017-03-03 xslipstream

当解析'“quit”'为int时，会发生什么你期望发生？也许你想要某种菜单，用户输入一个数字，而不是“退出”？例如。 '0'还是'-1'？ – HimBromBeere

只需在变量输入的readline之后移动检查以退出或立即退出。 – Steve

这也是一件小事，但正确的英文术语将是“骰子”而不是“骰子”。 –

Tigrams是非常接近，这是稍微好一点

Console.Write("Please enter the number of dices you want to roll: "); 
string input = Console.ReadLine(); 
while (input != "quit" && input != "exit") 
{ 
    int numTries = 0; 
    if (int.tryParse(input, out numTries) 
    { 
    RollDice(numTries); 
    } 
    Console.Write("Please enter the number of dices you want to roll: "); 
    input = Console.ReadLine(); 
}

来源

2017-03-03 14:22:32

while (true) 
    { 
     Console.Write("Please enter the number of dices you want to roll: "); 
     string input = Console.ReadLine(); 
     if (input == "quit" || input == "exit") //check it immediately here 
      break; 

     int numTries = 0; 
     if(!int.TryParse(input, out numTries)) //handle not valid number 
     { 
      Console.WriteLine("Not a valid number"); 
      continue; 
     } 


     RollDice(numTries); 
     Console.ReadKey(); 

    }

来源

2017-03-03 14:16:15 Tigran

谢谢Tigran。问题 - 如果我输入的不是int，“quit”或“exit”。我的程序在技术上会在int numTries = Convert.ToInt32（input）时崩溃。有关如何解决这个问题的任何建议？ – xslipstream

@KyleCheung：我通过处理非有效输入更新了答案。其中“无效”意味着不是“int”数字。 – Tigran

谢谢Tigran的帮助，我会从中学习 – xslipstream

尝试int numTries =int.Parse(input != null ? input: "0");

来源

2017-03-03 14:17:23 Mokhtar

我会研究这个，谢谢你的回复 – xslipstream

试图使它尽可能接近你有什么

while (true) 
    { 
     Console.Write("Please enter the number of dices you want to roll: "); 
     string input = Console.ReadLine(); 
     int numTries; 
     if (int.TryParse(input, out numTries)) 
     { 
      RollDice(numTries); 
     } 
     else if(input == "quit" || input == "exit") 
     { 
      break; 
     } 
    }

来源

2017-03-03 14:19:56 Innat3

当用户输入退出或退出时打破循环c＃

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