Question

I got my wrist slapped because in an assignment i had a method call itself when an input error was made. I have no idea how to or what to use instead of the code i wrote. I need help to find the correct way on how to do it.

I love to code so i just need a nudge in the right way! 🙂

The code i had written looks like this.

 private void SumTheNumbers()
 {
 Console.Write("Please give the value no "+ index + " :");
        if (false == int.TryParse(Console.ReadLine(), out num))
        { 
            //Errormessage if the user did not input an integer.
            Console.WriteLine("Your input is not valid, please try again.");
            Console.WriteLine();
            sum = 0;
            SumTheNumbers();
        }
        else
        {
            //Calculate the numbers given by user
            sum += num;
        }
  }

Answer 1

The standard way to implement this would be with a while loop.

int num;
while (!int.TryParse(Console.ReadLine(), out num))
{
    Console.WriteLine("Your input is not valid, please try again.\n");
}