SumOf5Numbers

using System;
 
class SumOf5Numbers
{
    static void Main()
    {
        Console.WriteLine("Please enter 5 numbers separated by space:");
        string input = Console.ReadLine();
        string[] numbersText = input.Split();
        double[] numbers = new double[5];
        bool check = true;
        for (int i = 0; i < 5; i++)
        {
            bool checkArray = double.TryParse(numbersText[i], out numbers[i]);
            check = (check && checkArray);
        }

        double sum = 0;
        if (check == true)
        {
            for (int i = 0; i < 5; i++)
            {
                sum += numbers[i];
            }
            Console.WriteLine("sum={0}",sum);
        }
        else
        {
            Console.WriteLine("invalid entry");
        }
    }
}