Question

I need help with my homework please. I should write this program in C++ language and use Inventory.h file (header file), Inventory.cpp file (implementation file), and main.cpp file (main program).

This is the program:

6. Inventory Class Design an Inventory class that can hold information and calculate data for items ma retail store's inventory. The class should have the following private member variables: Description An int that holds the item's item number Variable Name itemNumber An int for holding the quantity of the items on hand. quantfty A double for holding the wholesale per-unit A double for holding the total inventory cost of the item (calculated as quantity times cost). cost of the item cost totalCost The class should have the following public member functions: Description Member Function Sets all the member variables to 0. Default Constructor Accepts The function should copy these values to the appropriate member variables and then call the setTota1Cost function. an item's number, cost, and quantity Constructor #2 as arguments. set ItemNumber Accepts an integer argument that is copied to the itemNumber member variable. setQuantity Accepts quantity member variable. integer argument that is copied to the an setCost Accepts member variable. a double argument that is copied to the cost set Tota1Cost Calculates the total inventory cost for the item (quantity times cost) and stores the result in tota1Cost. Returns the value in itemNumber. getItemNumber getQuantity Returns the value in quantity. getCost Returns the value in cost. getTotalCost Returns the value in total Cost.

Demonstrate the class in a driver program. Input validation, don’t accept negative values for item number, quantity, or cost.

Answer 1

Answer :

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"inventory.h"

#ifndef INVENTORY_H
#define INVENTORY_H

class inventory
{
public:
inventory();
inventory(int itemNum,int Quantity,double Cost);
void setItemNumber(int Item);
void setQuantity(int Quantity);
void setCost(double cost);
void setTotalCost();
int getItemNumber();
int getQuantity();
double getCost();
double getTotalCost();

private:
int itemNumber;
int quantity;
double cost;
double totalCost;
};

#endif // INVENTORY_H

"inventory.cpp"

#include<iostream>
#include "inventory.h"
using namespace std;
inventory::inventory() // default constructor set all values to zero
{
itemNumber=0;
quantity=0;
cost=0.0;
totalCost=0.0;

}

inventory :: inventory(int itemNum,int Quantity,double Cost) //set all values passed using parameter constructor
{
setItemNumber(itemNum);
setQuantity(Quantity);
setCost(Cost);
setTotalCost(); //calculate cost

}

void inventory :: setItemNumber(int itemNum)
{
if(itemNum>=0) //check for negative value if so set zero and print a message
itemNumber=itemNum;
else
{
itemNumber=0;
cout<<"don't pass negative value" <<"\n";
}
}

void inventory :: setQuantity(int Quantity)
{
if(Quantity>=0) //check for negative value if so set zero and print a message
quantity=Quantity;
else
{
quantity=0;
cout<<"don't pass negative value" <<"\n";
}

}

void inventory :: setCost(double Cost)
{
if(Cost>=0) //check for negative value if so set zero and print a message
cost=Cost;
else
{
cost=0.0;
cout<<"don't pass negative value" <<"\n";
}
}

void inventory :: setTotalCost()
{
totalCost=quantity*cost;
}

int inventory :: getItemNumber()
{
return itemNumber; //return itemNumber
}

int inventory :: getQuantity()
{
return quantity; //return item quantity

}

double inventory :: getCost()
{
return cost; //return cost
}

double inventory :: getTotalCost()
{

return totalCost; //return total cost
}

"main.cpp"

#include <iostream>

#include "inventory.h"
using namespace std;

int main()
{
cout << "Testing for parameter constructor" << endl;
inventory in(11,12,18.19); //set and get values using parameter constructor
cout<<in.getCost()<<endl;
cout<<in.getItemNumber()<<endl;
cout<<in.getQuantity()<<endl;
cout<<in.getTotalCost()<<endl;
inventory Int; //set and get values using default constructor

cout<<"Testing for default constructor "<<endl;
Int.setCost(110.98);
Int.setItemNumber(10);
Int.setQuantity(16);
Int.setTotalCost();
cout<<Int.getCost()<<endl;
cout<<Int.getItemNumber()<<endl;
cout<<Int.getQuantity()<<endl;
cout<<Int.getTotalCost()<<endl;

cout<<"testing for negative values"<<endl;

inventory I(11,12,-10); //set and get values using parameter constructor
cout<<I.getCost()<<endl;
cout<<I.getItemNumber()<<endl;
cout<<I.getQuantity()<<endl;
cout<<I.getTotalCost()<<endl;

return 0;
}

X CAUsers tinku\Desktop\main\bin\Debug\main.exe Testing for parameter constructor 18.19 11 12 218.28 Testing for default constructor i10.98 16 1775.68 testing for negative values don't pass negative value i1 12 Process returned 0(0x0) Press any key to continue. : 0.064 s execution time