// Defines a base class named Customer // And a child class FrequentCustomer who receives a discount // Main program demonstrates a customer of each type using System; public class DebugTen01 { public static void Main() { Customer aRegularCustomer = new Customer(); FrequentCustomer aFrequentCustomer = new FrequentCustomer(); aRegularCustomer.CustNum = 2514; aRegularCustomer.CustBalance = 765.00; aFrequentCustomer.CustNum = 5719; aFrequentCustomer.CustBalance = 2500.00; aFrequentCustomer.DiscountRate = 0.15; WriteLine("\naRegularCustomer #{0} owes {1}",aRegularCustomer.CustNum,aRegularCustomer.CustBalance.ToString("C2")); WriteLine("\naFrequentCustomer #{0} would owe {1} without the discount",aFrequentCustomer.CustNum,aFrequentCustomer.CustBalance.ToString("C2")); double newBalance = (1 - aFrequentCustomer.DiscountRate) * aFrequentCustomer.CustBalance; WriteLine("...with {0} discount, customer owes {1}", aFrequentCustomer.DiscountRate.ToString("P"),newBalance.ToString("C", CultureInfo.GetCultureInfo("en-US"))); } } class Customer { private int custNum; private double custBalance; public int CustNum { get { return custNum; } set { custNum = value; } } public double CustBalance { get { return custBalance; } set { custBalance = value; } } } class FrequentCustomer : Customer { private double discountRate; public double DiscountRate { get { return discountRate; } set { discountRate = value; } } }

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

// Defines a base class named Customer

// And a child class FrequentCustomer who receives a discount

// Main program demonstrates a customer of each type

using System;

public class DebugTen01

{

public static void Main()

{

Customer aRegularCustomer = new Customer();

FrequentCustomer aFrequentCustomer = new FrequentCustomer();

aRegularCustomer.CustNum = 2514;

aRegularCustomer.CustBalance = 765.00;

aFrequentCustomer.CustNum = 5719;

aFrequentCustomer.CustBalance = 2500.00;

aFrequentCustomer.DiscountRate = 0.15;

WriteLine("\naRegularCustomer #{0} owes {1}",aRegularCustomer.CustNum,aRegularCustomer.CustBalance.ToString("C2"));

WriteLine("\naFrequentCustomer #{0} would owe {1} without the discount",aFrequentCustomer.CustNum,aFrequentCustomer.CustBalance.ToString("C2"));

double newBalance = (1 - aFrequentCustomer.DiscountRate) * aFrequentCustomer.CustBalance;

WriteLine("...with {0} discount, customer owes {1}", aFrequentCustomer.DiscountRate.ToString("P"),newBalance.ToString("C", CultureInfo.GetCultureInfo("en-US")));

}

class Customer

{

private int custNum;

private double custBalance;

public int CustNum

{

get { return custNum; }

set { custNum = value; }

}

public double CustBalance

{

get { return custBalance; }

set { custBalance = value; }

}

class FrequentCustomer : Customer

{

private double discountRate;

public double DiscountRate

{

get { return discountRate; }

set { discountRate = value; }

}

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