Question2

using System;

namespace ConsoleApp1
{
    public class Question2
    {
        /*
        static void Main(string[] args)
        {
            int length = 0, i = 0;

            while (length <= 0) // Making sure the length isn't negative (!)
            {
                Console.WriteLine("Enter array's length: ");
                length = int.Parse(Console.ReadLine());
            }

            int[] arr = new int[length];

            // Scanning values into the array:

            for (i = 0; i < arr.Length; i++)
            {
                Console.Write("Enter a number: ");
                arr[i] = int.Parse(Console.ReadLine());
            }

            // Printing the results: which sum is bigger (?)

            if (IsEvenSumBigger(arr) == 1)
            {
                Console.WriteLine("Sum of evens is bigger than sum of odds!");
            }
            else if(IsEvenSumBigger(arr) == -1)
            {
                Console.WriteLine("Sum of evens is smaller than sum of odds!");
            }
            else
            {
                Console.WriteLine("Sum of evens and odds are equal!");
            }
        }
*/
        /*
            A function that checks whether the sum of the numbers in the even indexes are bigger.

            Input: arr - The array we check.
            Output: 1 - Even sum bigger, 0 - Sums are equal, -1 - Odds are bigger.
         */

        public static int IsEvenSumBigger(int[] arr)
        {
            int i = 0, sumOfOdds = 0, sumOfEvens = 0, returnAnswer = 0;
            for (i = 0; i < arr.Length; i++)
            {
                if (i % 2 == 0) // In other words, an even index.
                {
                    sumOfEvens += arr[i];
                }
                else
                {
                    sumOfOdds += arr[i];
                }
            }

            // Avoid multiple return statments:

            if (sumOfOdds > sumOfEvens)
            {
                returnAnswer = -1;
            }
            else if (sumOfEvens > sumOfOdds)
            {
                returnAnswer = 1;
            }
            else
            {
                returnAnswer = 0;
            }

            return returnAnswer;

        }

    }
}