using System;

namespace CSharpPositiveOrNegative
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                //Declaring the 3 integer variables
                int valueOne, valueTwo, valueThree;

                Console.WriteLine("Please Enter a whole number: ");
                valueOne = int.Parse(Console.ReadLine());

                Console.WriteLine("Please Enter another whole number: ");
                valueTwo = int.Parse(Console.ReadLine());

                //calculate the product of the 2 variables
                valueThree = valueOne * valueTwo;

                // Use the && operator to determine whether the two numbers are
                // both positive numbers - more than 0
                //The product is positive only if the 2 numbers have the same sign
                if (valueOne > 0 && valueTwo > 0)
                {
                    Console.WriteLine(
                    "The answer is a Positive Number. The answer is: "
                     + valueThree);
                    // Use the && operator to determine whether the two numbers are
                    // both negative numbers (less than 0)

                    //If this condition is true the other "else if" are 
                    //dismissed without evaluating their conditions
                }
                else if (valueOne < 0 && valueTwo < 0)
                {
                    Console.WriteLine(
                    "The answer is a Positive Number. The answer is: " + valueThree);
                }
                // Use the OR operator to determine whether one of the numbers is
                // less than 0
                else if (valueOne < 0 || valueTwo < 0)
                {
                    //This condition is tested ONLY IF the above conditions are false
                    Console.WriteLine(
                    "The answer is a Negative Number. The answer is: " + valueThree);
                }
                else
                {
                    Console.WriteLine(
                    "Both numbers are not greater or less than 0");
                }
            }
            catch (FormatException)
            {
                Console.WriteLine("You've entered a wrong formatted number");
            }
            Console.WriteLine("\nPress any key to exit");
            Console.Read();
        }
    }
}