﻿using System;

    class NullValuesArithmetic
    {
        static void Main()
        {
            //Create a program that assigns null values to an integer and to a double variable. Try to print these variables at the console. Try to add some number or the null literal to these variables and print the result.

            int? a = null;
            double? b = null;
            Console.WriteLine("{0} {1}", a, b);
            a += 5;
            b += null;
            Console.WriteLine("{0} {1}", a, b);
        }
    }

