using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please input 3 integers to add together");

        int num1 = Convert.ToInt32(Console.ReadLine());

        int num2 = Convert.ToInt32(Console.ReadLine());

        int num3 = Convert.ToInt32(Console.ReadLine());

        int total = adding(num1, num2, num3);

        Console.WriteLine(total);

    }

    static int adding(int num1, int num2, int num3)

    {

        int total = num1 + num2 + num3;

        return total;

    }

}

​