Find Greatest Without Using "If-else"

using System;

class greaterOfTwo
{
    static void Main(string[] args)
    {
        Console.WriteLine("Please enter the first number:");
        int a;
        int.TryParse(Console.ReadLine(), out a);
        Console.WriteLine("Please enter the second number:");
        int b;
        int.TryParse(Console.ReadLine(), out b);

        int c = a - b;// We calculate the difference of the to numbers.
        int k = (c >> 31) & 1;// Using the bitwise operator to move the senior bit to the first position and then we & it with 1(which first bit is also 1) to make k 1 or 0;
        int max = a - k * c;// here if a < b, k is 1 --> a - 1 * c = a - c(but c = a - b, remember?), so a - (a - b) = b!!! Then we give that value to MAX.

        Console.WriteLine("The greatest of " + a + " and " + b + " is: " + max);// And in the end we print MAX
    }
}