//GABRIEL, ALDRIN BORJ M.

//CCP 1103 - ITDC

//PASCAL'S TRIANGLE

​

using System;

public class Program

{

    public static void Main(string[] args)

    {

        string inputNumber;

        int number;

        int sumNextRow = 1;

        int sumAllAboveRow = 1;

        int sum = 1;

​

        Console.WriteLine("Pascal's Triangle.");

        Console.WriteLine();

​

        Console.Write("Enter a row number: ");

        inputNumber = Console.ReadLine();

        if (Int32.TryParse(inputNumber, out number) == true)

        {

            if (number < 0)

            {

                Console.WriteLine("Input number less than zero is not allowed.");

            }

            else if (number > 25)

            {

                Console.WriteLine("Input number greater than 25 is not allowed.");

            }

            else

            {

                if (number == 0)

                {

                    sumAllAboveRow = 0;

                }

                else

                {

                    for (int counterOne = 1; counterOne < number; counterOne++)

                    {

                        sum *= 2;

                        sumAllAboveRow += sum;

                    }

                }

                for (int counterTwo = 1; counterTwo <= number + 1; counterTwo++)

                {

                    sumNextRow *= 2;

                }

                Console.WriteLine("The sum of numbers above row " + number + " is " + sumAllAboveRow + ". The sum of the numbers in row " + (number + 1) + " is " + sumNextRow + ".");

            }

        }

        else

        {

            Console.WriteLine("Invalid Input. Please Enter a numeric value.");

        }

​

​

    }

​

}   

​