using System;

public class Program

{

    public static void Main()

    {

        // declare variables

        int firstNumber, secondNumber, thirdNumber, fourthNumber;

        int resultVar;

        // capture user input

        Console.WriteLine("Hi! Please give me a number:");

        firstNumber = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Now give me a second number:");

        secondNumber = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Now give me a third number:");

        thirdNumber = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Now give me a fourth number:");

        fourthNumber = Convert.ToInt32(Console.ReadLine());

        // calculate result

        resultVar = firstNumber * secondNumber * thirdNumber * fourthNumber;

        Console.WriteLine("The product of all your numbers is: "+resultVar);

    }

}