using System;

​

public class Program

{

    static int pop;

    static string[] log = new string[10];

    public static void Main()

    {

       string abc = "5 6 10 345 23 45";

       log = abc.Split(' ');

       Conv(3,ref pop);

       Console.WriteLine(pop); // expected result: pop == 345

    }

    static void Conv(int i, ref int load)

    {

       if (log[i] != null){ load = int.Parse(log[i]);}

    }

}