How to check two numbers entered by the user are equal or not [C#]

Write a program in C# that checks whether the two numbers entered by the user are equal or not.

Following is the simple C# code :

class Lab
    {
        static void Main(string[] args)
        {

            int? firstValue;
            int? secondValue;
            Console.WriteLine("Enter First Number");
            firstValue = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Enter Second Number");
            secondValue = Convert.ToInt32(Console.ReadLine());

            if (firstValue == secondValue)
            {
                Console.WriteLine("First Number = {0} and Second Number = {1} both are equal", firstValue, secondValue);
            }
            else
            {
                Console.WriteLine("First Number = {0} and Second Number = {1} both are not equal", firstValue, secondValue);
            }

            Console.ReadLine();

        }
    }

Output:-