using System;

using System.Collections.Generic;

using System.Collections;

using System.IO;

public class Program

{

    static string yourMoney = @"28:Toy

1:Chocolate bar

10:Water bottle";

    //static string yourTextFileContent = File.ReadAllText("money.txt");

    public static void Main()

    {

        Console.WriteLine("Using IEnumerable");

        foreach (int item in GetEnumerableIntFromString(yourMoney))

        {

            Console.WriteLine(item);

        }

    }

    // Using IEnumerable

    private static IEnumerable<int> GetEnumerableIntFromString(string str)

    {

        string[] splitLine = str.Split(new[]{'\r','\n'},StringSplitOptions.RemoveEmptyEntries);

        foreach(string item in splitLine)

        {

            string[] splitToGetNumber = item.Split(new[]{':'},StringSplitOptions.RemoveEmptyEntries);

            yield return Convert.ToInt32(splitToGetNumber[0].Trim());

        }

    }

}