Sum

using System;
using System.Linq;

class SumOfNumbers
{
    static void Main()
    {
        Console.WriteLine("Enter 5 numbers separated by space in 1 line");

        string[] delimitedNum = Console.ReadLine().Split();

        while (delimitedNum.Length != 5)
        {
            Console.WriteLine("You have not entered exactly 5 numbers! Please start over");
            delimitedNum = Console.ReadLine().Split();
        }

        double[] numbers = Array.ConvertAll(delimitedNum, double.Parse);
        Console.WriteLine(numbers.Sum());
    }
}