C#•3y ago

Exiting if loop inside of a while statement and starting over

in my else if statement, how do i make it start at the beginning of the while loop if number is lower or higher than guess?

while (true)
            {
                if (guess == number)
                {
                    Console.WriteLine("Correct!");
                    break;
                }
                else if (guess<number)
                    {
                        Console.WriteLine("Number is higher!");
                    }
                    else
                    {
                        Console.WriteLine("Number is lower!");
                    }
                }
            }

while (true)
            {
                if (guess == number)
                {
                    Console.WriteLine("Correct!");
                    break;
                }
                else if (guess<number)
                    {
                        Console.WriteLine("Number is higher!");
                    }
                    else
                    {
                        Console.WriteLine("Number is lower!");
                    }
                }
            }

16 Replies

TheBoxyBear•3y ago

continue to go to the next iteration and break to stop the loop, though you should't be using while(true) Base the while on the exit condition do-while if you don't want to check the exit condition before the first iteration

Bin•3y ago

if you dont break it then the while loop will start over from beginning (when all statements finished), and dont forget to put exit condition unless if u want make it infinitely loop put continue and it will go back to first statement in while loop

T3CHOP•3y ago

while (true)
            {
                if (guess == number)
                {
                    Console.WriteLine("Correct!");
                    break;
                }
                else if (guess<number)
                    {
                        Console.WriteLine("Number is higher!");
                        continue;
                    }
                    else
                    {
                        Console.WriteLine("Number is lower!");
                    }
                }
            }

while (true)
            {
                if (guess == number)
                {
                    Console.WriteLine("Correct!");
                    break;
                }
                else if (guess<number)
                    {
                        Console.WriteLine("Number is higher!");
                        continue;
                    }
                    else
                    {
                        Console.WriteLine("Number is lower!");
                    }
                }
            }

TheBoxyBear•3y ago

Base the loop on guess == number

Bin•3y ago

since you put the number is lower inside else statement, it will not execute if number is higher

TheBoxyBear•3y ago

Since there is no guess at the start, do-while to guess before evaluating and potentially exiting the loop

T3CHOP•3y ago

im so confused lol

Bin•3y ago

if if statement is executed, the following else statement will not executed

T3CHOP•3y ago

mhm

Bin•3y ago

so i guess in your case u can just omit the continue keyword

TheBoxyBear•3y ago

The continue approach works but is less readable. In general you want to avoid while(true) if you can

T3CHOP•3y ago

oh ok

TheBoxyBear•3y ago

Replacing true with an exit condition, such as number == guess, or in this case number != guess since you want to loop until it's equal

Bin•3y ago

you can refactor it like for example: bool isGuessTrue = false; if (!isGuessTrue) { //some code eventually setting isGuessTrue to true}

TheBoxyBear•3y ago

That too will prevent evaluating the number when it's already been done Starting with true, you just have to set it to false if < or >

mtreit•3y ago

I almost always use while (true) and then just use break when the exit criteria are met. It's not a bad practice to use while (true) for those kind of loops. Because sometimes your exit criteria can be complex.

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Exiting if loop inside of a while statement and starting over