using the source codes at the bottom of the page

Serendipity Booksellers Software Development

Project Part 4: A Problem-Solving Exercise

1.The Main Menu

Modify the mainmenu.cpp program so it validates the users input. If a value outside the range of 1 through 4 is entered, the program should display an error message. Here is an example screen:

Serendipity Booksellers

Main Menu

1. Cashier Module

2. Inventory Database Module

3. Report Module

4. Exit

Enter Your Choice: 5

Please enter a number in the range 1 4.

Later, in Chapter 6, you will begin merging you will begin merging all the programs you have written into the mainmenu.cpp file. You will now start making preparations for that. After the user input has been validated, add a switch statement that branches to a section of code, depending on which menu choice the user made. For now, the program should simply display a message like You selected item 1 when the user enters a number. Here is an example of the screen:

Serendipity Booksellers

Main Menu

1. Cashier Module

2. Inventory Database Module

3. Report Module

4 .Exit

Enter Your Choice: 3

You selected item 3.

2.The Inventory Database Menu

You will make the same modifications to invmenu.cpp that you made to mainmenu.cpp.

Modify the invmenu.cpp program so it validates the users input. If a value outside the range of 1 through 5 is entered, the program should display an error message. Here is an example screen:

Serendipity Booksellers

Inventory Database

1. Look Up a Book

2. Add a Book

3. Edit a Books Record

4. Delete a Book

5. Return to the Main Menu

Enter Your Choice: 9

Please enter a number in the range 1 5.

After the user input has been validated, add a switch statement that branches to a section of code, depending on which menu choice the user made. For now, the program should simply display a message like You selected item 1 when the user enters a number. Here is an example of the screen:

Serendipity Booksellers

Inventory Database

1. Look Up a Book

2. Add a Book

3. Edit a Books Record

4. Delete a Book

5. Return to the Main Menu

Enter Your Choice: 2

You selected item 2.

3.The Reports Menu

You will make the same modifications to reports.cpp that you made to mainmenu.cpp and invmenu.cpp.

Modify the reports.cpp program so it validates the users input. If a value outside the range of 1 through 7 is entered, the program should display an error message. Here is an example screen:

Serendipity Booksellers

Reports

1. Inventory Listing

2. Inventory Wholesale Value

3. Inventory Retail Value

4. Listing by Quantity

5. Listing by Cost

6. Listing by Age

7. Return to Main Menu

Enter Your Choice: 8

Please enter a number in the range 1 7.

After the user input has been validated, add a switch statement that branches to a section of code, depending on which menu choice the user made. For now, the program should simply display a message like You selected item 1 when the user enters a number. Here is an example of the screen:

Serendipity Booksellers

Reports

1. Inventory Listing

2. Inventory Wholesale Value

3. Inventory Retail Value

4. Listing by Quantity

5. Listing by Cost

6. Listing by Age

7. Return to Main Menu

Enter Your Choice: 5

You selected item 5.

source code for mainmenu.cpp and cashier.cpp

#include #include #include using namespace std; int main() { string date, ISBN, Title; int numOfBook; double price, subtotal, tax, total;

cout> ws, date); cout> numOfBook; cout> ws, ISBN); cout> ws, Title); cout> price; subtotal = numOfBook * price; tax = 6 * subtotal / 100; total = subtotal + tax; // setting to 2 decimal places in fixed point notation cout

Modified Program mainmenu.cpp

#include #include using namespace std; int main() { int choice = 0; while(choice 4) {

cout

cout

cout

cout

cout

cout> choice; if(choice 4) cout

source codes for report.cpp and invmenu.cpp

invmenu.cpp

#include

#include

using namespace std;

int main()

{

cout

cout

cout

cout

cout

cout

cout

cout

int choice = 0;

while(1)

{

cin>>choice;

if(choice5)

{

cout

cout

}

else

break;

}

return 0;

}

current OUTPUT:

reports.cpp

#include

#include

using namespace std;

int main()

{

cout

cout

cout

cout

cout

cout

cout

cout

cout

cout

int choice = 0;

while(1)

{

cin>>choice;

if(choice7)

{

cout

cout

}

else

break;

}

return 0;

}

Curren OUTPUT so far:

Serendipity Booksellers Inventory Database 1. Look Up a Book 2. Add a Book 3. Edit a Book's Record 4. Delete a Book 5. Return to the Main Menu Enter Your Choice: 6 Invalid choice Enter Your Choice Again: e Invalid choice Enter Your Choice Again: 3