Miscellany

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;

namespace BankTransactions
{
    class Program
    {
        private Double depositValue;
        private Double withdrawalValue;
        private Double avgDeposit;
        private Double avgWithdrawal;
        private Double transactionBalance;
        private int numDeposits;
        private int numWithdrawals;

        void Run(string[] args)
        {
            StreamReader objReader = File.OpenText("ATMtransactions.txt");
            String strText;
            Regex transactionOfInterest = new Regex("2006/9/\\d+/\\d\\d:\\d\\d,240037,([dw]),(.*)");
            strText = objReader.ReadToEnd();
            objReader.Close();
            MatchCollection myMatches = transactionOfInterest.Matches(strText);
            
            foreach (Match m in myMatches)
            {
                    if (m.Groups[1].Value == "d")
                    {
                        numDeposits++;
                        depositValue += Convert.ToDouble(m.Groups[2].Value);
                    }
                    else if (m.Groups[1].Value == "w")
                    {
                        numWithdrawals++;
                        withdrawalValue += Convert.ToDouble(m.Groups[2].Value);
                    }
            }
            CalcSummaries();
            DumpSummaries();
            Console.ReadLine();
        }

        static void Main(string[] args)
        {
             BankTransactions bt=new BankTransactions()
             bt.run(args);
        }

        private void CalcSummaries()
        {
            avgDeposit = depositValue / numDeposits;
            avgWithdrawal = withdrawalValue / numWithdrawals;
            transactionBalance = depositValue - withdrawalValue; 
        }

        private void DumpSummaries()
        {
            Console.WriteLine("Total Deposits : " + depositValue.ToString("c"));
            Console.WriteLine("Average Deposit : " + avgDeposit.ToString("c"));
            Console.WriteLine("Total Withdrawals : " + withdrawalValue.ToString("c"));
            Console.WriteLine("Average Withdrawal : " + avgWithdrawal.ToString("c"));
            Console.WriteLine("Transaction Balance For Month : " + transactionBalance.ToString("c"));
        }
    }
}