Assistance with assignment on classes.

[nicbark88]

Hi again. I was hoping I could find input from other members about the an assignment about classes. It goes as follows:

In this exercise, you will design a class memberType.
The class has the following data members:
• memberName. A string that holds the name of a person
• memberID. A string that holds the member identification number
• numBooks. An int that holds the number of books bought
• purchaseAmt. A double that holds the amount spent on books
In addition, the class should have the following constructor and other member functions.
• Constructor. The constructor should accept the person’s name and member identification number. These values should be assign to the object’s memberName and memberID data members. The constructor should also assign 0 to numBooks and purchaseAmt.
• Accessor. Appropriate accessor function to get the values stored in an object’s memberName, memberID, numBooks, and purchaseAmt data members.
• addNewPurchase. The addNewPurchase function should accept the number of books for a new purchase and the total amount of the purchase in dollars. The function should add these values to the existing numBooks and purchaseAmt data member.
Demonstrate the class in a client program that creates a memberType object and then calls the addNewPurchase function twice (representing 2 new purchases). After each new purchase, display the member’s id and name along with the current number of books and current purchase amount.


So here is my member.h file:

  #ifndef MEMBER_H
#define MEMBER_H

#include <string>
#include <iostream>

using namespace std;

// define the class members and member function prototypes here
class memberType
{
private:
	string memberName;
	string memberID;
	int  numBooks;
	double purchaseAmt;
public:

	//default constructor
	memberType()
	{
		memberName = "";
		memberID = "";
		numBooks = 0;
		purchaseAmt = 0;
	}

public: void set(string Name, string ID, int Books, double Amt);
		void modify(string Name);
		void modify(int Books, double Amt);
		void show();
};

void memberType::set(string Name, string ID, int Books, double Amt)
{
	memberName = Name;
	memberID = ID;
	numBooks = Books;
	purchaseAmt = Amt;
}

void memberType::modify(string Name)
{
	memberName = Name;
}

void memberType::modify(int Books, double Amt)
{
	numBooks = Books;
	purchaseAmt = Amt;
}

void memberType::show()
{
	cout << "Member's name is: " << memberName << endl;
	cout << "Member's ID is: " << memberID << endl;
	cout << "Number of books purhased are: " << numBooks << endl;
	cout << "The amount of the purchase is: " << purchaseAmt << endl;
}
#endif 

My member.ccp

#include <string>
#include <iostream>
#include "member.h"

using namespace std

// Write code for the following member functions:
//Constructor. The constructor should accept the person’s name and member identification number.*************** 
//*************These values should be assigned to the object’s memberName and memberID data members.*********** 
//*************The constructor should also assign 0 to numBooks and purchaseAmt.*******************************
memberType::memberType(string memberName, string memberID)
{
	int numBooks = 0;
	double purchaseAmt = 0;

	cin >> memberName >> endl;
	cin >> memberID >> endl;
}

//Accessor.	Appropriate accessor functions to get the values stored in an object’s memberName, 
//**********memberID, numBooks, and purchaseAmt data members.*********************************


//addNewPurchase. The addNewPurchase function should accept the number of books for a new purchase and***************
//****************the total amount of the purchase in dollars as arguments. *****************************************
//****************The function should add these argument values to the existing numBooks and purchaseAmt data member. 

and my client.cpp

	//	the current number of books and current purchase amount.

#include <iostream>
#include <string>
#include <iomanip>
#include "member.h"


using namespace std;

int main()
{
	string Name, ID;
	int Books;
	double Amt;
	memberType obj;

	cout << "WELCOME TO PALOMA'S BOOK STORE" << endl;
	cout << "ENTER LIBRARY MEMBER'S NAME: ";
	cin >> Name;
	cout << "ENTER LIBRARY MEMBER'S ID: ";
	cin >> ID;
	cout << "ENTER NUMBER OF BOOKS BOUGHT: ";
	cin >> Books;
	cout << "ENTER DOLLAR AMOUNT PER BOOK: ";
	cin >> Amt;

	obj.set(Name, ID, Books, Amt);
	obj.show();

	cout << "ENTER UPDATED NAME: ";
	cin >> Name;
	obj.modify(Name);
	obj.show();

	cout << "ENTER UPDATED BOOKS: ";
	cin >> Books;

	obj.modify(Books, Amt);
	obj.show();


	system("pause");
	return 0;
} // end main 

Unfortunately, I am not sure what to put into my member.ccp. I think maybe some of code from my .h file (granted it is correct) may be what needs to into member, but I would like some opinions.

Thank you. I appreciate all feedback.

[Thomas1965]

You have done more than required. You were supposed the create one constructor with parameter memberName and memberID.

The constructor should accept the person’s name and member identification number. These values should be assign to the object’s memberName and memberID data members. The constructor should also assign 0 to numBooks and purchaseAmt.

Appropriate accessor function to get the values stored in an object’s memberName, memberID, numBooks, and purchaseAmt data members.

Where are your getMemberName() and other accessors?
Your set and modify functions are not required.

Also where is your addNewPurchase function?

Normall you put your declaration in the header file and the definition/implementation in the .cpp file.
I would do it like this:

member.h

#ifndef MEMBER_H
#define MEMBER_H

#include <string>
#include <iostream>

using namespace std;

// define the class members and member function prototypes here
class memberType
{
private:
	string memberName;
	string memberID;
	int  numBooks;
	double purchaseAmt;
public: 
   memberType(string name, string id);
   string getName();
  string getId();
  int getNumBooks();
  double getAmount();
  void addNewPurchase(int num_books, double amount);
};

#endif  

member.cpp

#include <string>
#include <iostream>
#include "member.h"

using namespace std

// Write code for the following member functions:
//Constructor. The constructor should accept the person’s name and member identification number.***************
//*************These values should be assigned to the object’s memberName and memberID data members.***********
//*************The constructor should also assign 0 to numBooks and purchaseAmt.*******************************
memberType::memberType(string name, string id)
{
memberName = name;
memberId = id;
int numBooks = 0;
double purchaseAmt = 0;
}

//Accessor. Appropriate accessor functions to get the values stored in an object’s memberName,
//**********memberID, numBooks, and purchaseAmt data members.*********************************

string memberType::getMemberName()
{
return memberName;
}

//TO DO

// Add the other accessor functions here


//addNewPurchase. The addNewPurchase function should accept the number of books for a new purchase and***************
//****************the total amount of the purchase in dollars as arguments. *****************************************
//****************The function should add these argument values to the existing numBooks and purchaseAmt data member.

void memberType::addNewPurchase()
{
// your code here
}

In the main.cpp file:

#include <iostream>
#include <string>
#include <iomanip>
#include "member.h"


using namespace std;

int main()
{
string Name, ID;
	int Books;
	double Amt;
	

	cout << "WELCOME TO PALOMA'S BOOK STORE" << endl;
	cout << "ENTER LIBRARY MEMBER'S NAME: ";
	cin >> Name;
	cout << "ENTER LIBRARY MEMBER'S ID: ";
	cin >> ID;
  memberType obj(Name, ID);
	cout << "ENTER NUMBER OF BOOKS BOUGHT: ";
	cin >> Books;
	cout << "ENTER DOLLAR AMOUNT PER BOOK: ";
	cin >> Amt;

	obj.addNewPurchase(Books, Amt);
	
       // Display obj by calling the accessor functions

	// Get second purchase and display obj again


	system("pause");
	return 0;
} // end main