5.4.While.Loop-AverageNumber

using System;

namespace AverageNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());

            int counter = 0;
            double numSum = 0;

            while (counter < num)
            {
                double number=double.Parse(Console.ReadLine());
                counter++;
                numSum += number;

            }
            if (counter >= num)
            {
                double average = numSum / num;
                Console.WriteLine($"{average:f2}");
            }
        }
    }
}