//Copyright (c) 2002 Art Gittleman
//This example is provided WITHOUT ANY WARRANTY 
//either expressed or implied.

using System;
namespace AcctAndTest
{
	/* Modifies the BankAccount class to include a class variable 
	* to store the total number of successful Deposit, Withdraw, 
	 * and GetBalance operations by any Acct object.
	*/

	/*!!!!!!!!!!
	 *Modify class Acct as required by Exercise 5.13.
	 */
	public class Acct 
	{
		private double balance;               // instance variable  
		private static int transactions = 0;  // class variable  		

		private static int acctNum = 0; //Add a class variable to count created bank accounts
                                                   
		public Acct()   
		{
			balance = 0;
			acctNum++; //Increment account number when this constructor is called
		}

		public Acct(double initialAmount) 
		{
			balance = initialAmount;
			acctNum++; //Increment account number when this constructor is called
		}

		public static int GetAcctNum()
		{
			return acctNum;
		}

		// Increments transactions
		public void Deposit(double amount) 
		{  // instance method 
			balance += amount;
			transactions++;
		}

		/* Only increments transactins if the
		 * withdrawal is successful.
		 */
		public double Withdraw(double amount) 
		{
			if (balance >= amount)
			{
				balance -= amount;
				transactions++;
				return balance;
			}
			else
				return -1.0;
		} 
		public double GetBalance() 
		{ 
			transactions++;  
			return balance;
		}
		public static int GetTransactionCount() 
		{   // class method
			return transactions;
		}
	}

	/* Creates some Acct objects and illustrates the use of
	* class variables and methods..
	*/
	public class TestAcct 
	{
		public static void Main () 
		{
			Acct myAcct = new Acct(25.00); 
			myAcct.Deposit(700.00);
			if(myAcct.Withdraw(300.00) < 0)
				Console.WriteLine("Insufficient funds");
			if(myAcct.Withdraw(450.00) < 0)
				Console.WriteLine("Insufficient funds");
			Console.WriteLine
				("My balance after completing transactions is {0:C}",
				myAcct.GetBalance());
			Console.WriteLine("The number of transactions is {0}", 
				Acct.GetTransactionCount());
			Acct yourAcct = new Acct();                                        yourAcct.Deposit(1234.56);                                         Console.WriteLine
																																					  ("Your balance after completing transactions is {0:C}",              yourAcct.GetBalance());
			Console.WriteLine("The number of transactions is {0}",
				Acct.GetTransactionCount());

			/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
			 * 
			 * Add your code here to test modified class Acct
			 * 
			 */
			Console.WriteLine("\nThe number of created bank accounts is: {0}", Acct.GetAcctNum()); 
		}
	}
}