C#

average = sum of samples / number of samples

#realJSOP wrote:

say out loud, "Alexa, I've detected an advertisement".

using System;
using System.Collections.Generic;
					
public class Program
{
	public class TheWeather
    {
        public DateTime dateTime { get; set; } // WHY?? give it a decent name,
                                               // don't use the type-name
        public double Actual_mean_temp { get; set; }
        public double Record_min_temp { get; set; }
        public double Record_max_temp { get; set; }
        public double Actual_precipitation { get; set; }

    }
	public static TheWeather GetAverageForMonth(List<TheWeather> entries, int year, int month)
    {
        TheWeather GetItem = entries[0]; // .First();

        return GetItem;
    }
	public void Main()
	{
		List<TheWeather> wl = new List<TheWeather>();
		wl.Add(new TheWeather() {Actual_mean_temp = 10});
		wl.Add(new TheWeather() {Actual_mean_temp = 20});
		
		double sum = 0; int cnt = 0;
		for (cnt = 0; cnt < wl.Count ; cnt++)
		{
			sum += wl[cnt].Actual_mean_temp;
			Console.WriteLine(string.Format("item {0}, new avg: {1}", cnt, sum / (cnt + 1)));
		}
	}
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Abdalla Ben Omran wrote:

with LINQ its always easy to get a solution thus i am trying to use no LINQ just for excerices

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

char[] splitChars = new char[] { '-', ',' };

string[] splitLine =
    "2014-7-1,76,66,86,66,85,48,97,1885,1970,0.13,0.16,5.09".Split(splitChars,
        StringSplitOptions.RemoveEmptyEntries);

if (splitLine.Length != 15)
{
    // handle bad line
}