Question

Write a C++ program that asks for the following information about a book order from the console:

• Title

• Author

• ISBN (hint: careful about what data type to use - validate 9 or 13 characters)

• Price (validate number < 400)

• Quantity (number of books to purchase – validate > 0 and < 100)

• Fiction/Non-Fiction (‘N’ or ‘F’ - validate)

• Genre (‘R’ romance, ‘D’ drama, ‘M’ mystery – validate)

Make use of the following data types:

• C++ string

• double

• int

• char

• bool

Additional Requirements:

• Assume the tax on the total price of the books is 7%

• If the quantity is 90-100: Fee $50, 80-89 Fee $40, 70-79: Fee $30, 60-69: Fee $20, less than 60 Fee $10

• Use the integer division and switch statement to determine the fee.

• Tax should not be calculated on the fees.

• A Boolean variable should be used to hold whether the book is Fiction or Non-fiction

• If the user puts in non-valid data for any of the questions, exit the program. (We will use loops in the next unit to re-ask the question)

• Prompt the user for Fiction/Non-Fiction and Genre in a clear manner explaining the char characters to enter for their choice (give a menu).

• Use an if/else if statement to display the genre in the output

• If the book is a non-fiction romance, remove the fee (this if statement should be separate and after the switch statement for the fee.

Example Output

(I will use different inputs when I test your program, however you can use this data to test your work.) Invoice (include the lines) to console:

_________________________

Invoice

Introduction to C++ Tony Gaddis

ISBN: 000345664 Non-Fiction Mystery

Print

Price:

Quantity:

Subtotal:

Tax:

Fees:

Total: ___________________________

170.50

Answer 1

// C++ program to create an application for ordering a book
#include <iostream>
#include <cctype>
#include <iomanip>
using namespace std;

int main() {

   string title, author, isbn;
   double price, tax;
   int quantity;
   bool fiction;
   char fictionInput;
   char genre;
   double fee;
   double subtotal;

   // input of book details
   cout<<"Enter book details : "<<endl;
   // input of title
   cout<<"Title : ";
   getline(cin,title);
   title = title.substr(0,title.length()-1); // remove '\n' from the end

   // input of author
   cout<<"Author : ";
   getline(cin,author);
   author = author.substr(0,author.length()-1); // remove '\n' from the end

   // input of isbn
   cout<<"ISBN : ";
   cin>>isbn;
   // validate the number of characters in isbn is 9 or 13
   if(isbn.length() != 9 && isbn.length() != 13)
   {
       cout<<"Invalid ISBN"<<endl;
       return 1;
   }

   // input of price
   cout<<"Price : ";
   cin>>price;

   // validate price < 400
   if(price >=400)
   {
       cout<<"Invalid price"<<endl;
       return 1;
   }

   // input of quantity
   cout<<"Quantity : ";
   cin>>quantity;
   // validate quantity >0 and quantity < 100
   if(quantity < 0 || quantity >= 100)
   {
       cout<<"Invalid quantity"<<endl;
       return 1;
   }
   // input of fiction
   cout<<"Fiction(F) / Non-fiction(N) :";
   cin>>fictionInput;

   // validate fiction input
   if((toupper(fictionInput) != 'F') && (toupper(fictionInput) != 'N'))
   {
       cout<<"Invalid Fiction input"<<endl;
       return 1;
   }

   // validate fiction input
   if(fictionInput == 'F')
       fiction = true;
   else
       fiction = false;

   // input of genre
   cout<<"Genre ('R'- romance, 'D' - drama, 'M' - mystery) : ";
   cin>>genre;

   // validate the genre
   if((toupper(genre) != 'R') && (toupper(genre) != 'D') && (toupper(genre) != 'M'))
   {
       cout<<"Invalid Genre"<<endl;
       return 1;
   }

   // calculate subtotal
   subtotal = quantity*price;
   // calculate tax
   tax = subtotal*0.07;

   // determine the fee
   int feeIndicator = quantity/10;
   switch(feeIndicator)
   {
       case 9:
           fee = 50;
           break;
       case 8:
           fee = 40;
           break;
       case 7:
           fee = 30;
           break;
       case 6:
           fee = 20;
           break;
       default:
           fee = 10;
   }

   // if book is non-fiction and genre is romance then remove the fee
   if((!fiction) && (toupper(genre) == 'R'))
       fee = 0;

   // output the details
   cout<<fixed<<setprecision(2);
   cout<<"Invoice : "<<endl;
   cout<<title<<" "<<author<<endl;
   cout<<"ISBN : "<<isbn;
   if(fiction)
       cout<<" Fiction ";
   else
       cout<<" Non-Fiction ";

   if(toupper(genre) == 'R')
       cout<<"Romance";
   else if(toupper(genre) == 'D')
       cout<<"Drama";
   else
       cout<<"Mystery";
   cout<<endl;
   cout<<"Price : "<<price<<endl;
   cout<<"Quantity : "<<quantity<<endl;
   cout<<"SubTotal : "<<subtotal<<endl;
   cout<<"Tax : "<<tax<<endl;
   cout<<"Fees : "<<fee<<endl;
   cout<<"Total : "<<(subtotal+tax+fee)<<endl;

   return 0;
}
//end of program

Output: