Online shopping cart

Question

(1) Create three files to submit:

1. ItemToPurchase.h - Class declaration
2. ItemToPurchase.cpp - Class definition
3. main.cpp - main() function

Build the ItemToPurchase class with the following specifications:

1. Default constructor
2. Public class functions (mutators & accessors)
3. SetName() & GetName() (2 pts)
4. SetPrice() & GetPrice() (2 pts)
5. SetQuantity() & GetQuantity() (2 pts)
6. Private data members
7. string itemName - Initialized in default constructor to "none"
8. int itemPrice - Initialized in default constructor to 0
9. int itemQuantity - Initialized in default constructor to 0

(2) In main(), prompt the user for two items and create two objects of the ItemToPurchase class. Before prompting for the second item, call cin.ignore() to allow the user to input a new string. (2 pts)

Ex:

Item 1

Enter the item name:

Chocolate Chips

Enter the item price:

3

Enter the item quantity:

1

Item 2

Enter the item name:

Bottled Water

Enter the item price:

1

Enter the item quantity:

10

(3) Add the costs of the two items together and output the total cost. (2 pts)

Ex:

TOTAL COST

Chocolate Chips 1 @ $3 = $3

Bottled Water 10 @ $1 = $10

Total: $13

Answer 1

//* ItemToPurchase.h ****//

#ifndef _ITEM2PURCHASE

#define MAX_NAME_LEN (255)

typedef

class ItemToPurchase

{

private:

char itemName[MAX_NAME_LEN];

int itemQuantity;

float itemPrice;

public:

ItemToPurchase();

void GetName( char * nameBuff);

inline float GetPrice() { return(itemPrice); }

inline int GetQuantity() { return(itemQuantity); }

void SetName(char * strName);

void SetPrice(float flPrice);

void SetQuantity(int qty);

} * TItemToPurchase;

#define ITEM2PURCHASE_SIZE (sizeof(ItemToPurchase))

#endif

//* ItemToPurchase.cpp

#ifndef _ITEM2PURCHASE

#include "itemToPurchase.h"

#endif

#include <string.h>

ItemToPurchase::ItemToPurchase()

{

strcpy(this->itemName,"NONE");

this->itemPrice=0.00f;

this->itemQuantity=0;

}

void ItemToPurchase::GetName( char * nameBuff)

{

strcpy(nameBuff,this->itemName);

}

void ItemToPurchase::SetName(char * strName)

{

strcpy(this->itemName,strName);

}

void ItemToPurchase::SetPrice(float flPrice)

{

this->itemPrice = flPrice;

}

void ItemToPurchase::SetQuantity(int qty)

{

this->itemQuantity = qty;

}

// Main.cpp

using namespace std;

#include <iostream>

#include <string>

#include <iomanip>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

#ifndef _ITEM2PURCHASE

#include "itemToPurchase.h"

#endif

#include <string.h>

#include <stdio.h>

void InputItem (TItemToPurchase itemToPurchase, char * promptMsg=NULL)

{

string itemName;

char itemNameBuff[MAX_NAME_LEN];

int qty;

float price;

if (promptMsg!=NULL)

{

cout << "********************************************************************" << endl;

cout << promptMsg << endl;

}

cout << "****************************************************************" << endl;

//here's the tricky part of inputting the string containing multiple tokens

cout << " Please input the item name :>";

getline(cin,itemName);

strcpy(itemNameBuff, itemName.c_str());

cout << "Please input the item price :>";

cin >> price;

cout << "Please input the item quantity :>";

cin >> qty;

itemToPurchase->SetName(itemNameBuff);

itemToPurchase->SetPrice(price);

itemToPurchase->SetQuantity(qty);

//flushes the input buffer and eats the newline

cin.ignore(MAX_NAME_LEN,'\n');

return;

}

void PrintReceipt (TItemToPurchase * A, int n)

{

cout << "TOTAL COST" << endl;

float total=0;

int qty;

float price;

char itemName[MAX_NAME_LEN];

float subtotal;

for (int iLoop=0; iLoop<n; iLoop++)

{

price = A[iLoop]->GetPrice();

qty = A[iLoop]->GetQuantity();

A[iLoop]->GetName(itemName);

subtotal = price*qty;

cout << itemName << " : " << qty << " @ $" << std::fixed << setprecision(2) << price

<< " = $" << std::fixed << setprecision(2) << subtotal << endl;

total += subtotal;

}

cout << "Total: $" << std::fixed << setprecision(2) << total << endl;

}

int main(int argc, char** argv)

{

int N=2;

TItemToPurchase A[N]; // there are the 2 items to purchase: pointers to them actually

char promptMsg[255];

// inputs

for (int iLoop=0; iLoop<N; iLoop++)

{

A[iLoop] = new ItemToPurchase;

sprintf(promptMsg," ITEM # %d", (iLoop+1));

InputItem(A[iLoop],(char *) promptMsg);

}

//outputs

PrintReceipt(A,N);

//frees the memory

for (int iLoop=0; iLoop<N; iLoop++)

{

delete A[iLoop];

}

return 0;

}