static void Main(string[] args)
{
string path = @"D:\Example\Example.txt";
December december = new December();
Console.WriteLine(december.performGetCost());
July july = new July();
Console.WriteLine(july.performGetCost());
Console.ReadLine();
using (StreamReader sr = File.OpenText(path))
{
string s = " ";
while ((s = sr.ReadLine()) != null)
{
File.AppendAllText(path, december.performGetCost().ToString());
File.AppendAllText(path, december.MonthValue.ToString());
sr.Close();
}
}
}
