How to remove character from input string in visual studio?

Question

C++ / C#

using System;
namespace F58
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            int f = Convert.ToInt32(Console.ReadLine());
            int sqr = (int)Math.Sqrt(f);
            Console.WriteLine(sqr);
        }
    }
}

Let's assume that when I typed into the console, I wrote the wrong number. How can I delete it, provided that I have not yet pressed ENTER.

Answer 1

Press Backspace?