Question

除else语句外，一切都正常运行。一旦数字彼此相等，它就会被跳过。它没有说＆＃34;你得到它＆＃34;最后。

//declare variables
int number = 4;
int guessCount = 0;
int guess;

//get first number
Console.WriteLine("Guess a number between 1 and 10:");
guess = Convert.ToInt32(Console.ReadLine());
guessCount = guessCount + 1; //increment counter

while (guess != number) //keep repeating until number is chosen
{
    guessCount = guessCount + 1; //increment counter

    if (guess < number) //if statement if guess is less than number
    {
        Console.WriteLine("Your guess is too low.");
    }
    else if (guess > number) //if statement if guess is more than number
    {
        Console.WriteLine("Your guess is too high.");
    }
    else //
    {
        Console.WriteLine("You got it!!");
    }

    //end of while to ask for a new guess
    Console.WriteLine("Guess again: ");
    guess = Convert.ToInt32(Console.ReadLine());
}

//display output
Console.WriteLine("You figured it out in " + guessCount + " guesses.");
Console.ReadLine(); //keep window open

Answer 1

当它进入while循环时，表示guess为!= number，此处唯一可能的状态为guess < number，您已经检查过的guess > number guess = number没有意义，因为如果guess等于number，它甚至不会进入while }循环。这就是为什么else语句永远不会执行的原因，因为else语句检查的唯一状态是guess == number。

Answer 2

while 表达式声明：猜测 ！=数字只要用户未键入 4 < / strong>（您的硬编码值）。您在检查 while 表达式之前设置 guess ，因此如果用户键入正确的数字，则while表达式将为false并且将跳过。我在问题的位置评论了你的代码。

//declare variables int number = 4; int guessCount = 0; int guess; //get first number Console.WriteLine("Guess a number between 1 and 10:"); // Problem A: user types in 4 -> guess becomes equal to number -> while expression gets false -> while body will not be executed guess = Convert.ToInt32(Console.ReadLine()); while (guess != number) //keep repeating until number is chosen { guessCount = guessCount + 1; //increment counter if (guess < number) //if statement if guess is less than number { Console.WriteLine("Your guess is too low."); } else if (guess > number) //if statement if guess is more than number { Console.WriteLine("Your guess is too high."); } else // { Console.WriteLine("You got it!!"); } //end of while to ask for a new guess Console.WriteLine("Guess again: "); // Problem B: user types in 4 -> guess becomes equal to number -> while expression gets false -> loop ends guess = Convert.ToInt32(Console.ReadLine()); }

我的while声明有什么问题？其他声明不会写

2 个答案: