I need this in C++ INVENTORY CLASS Design an Inventory class that can hold infor

Question

I need this in C++

INVENTORY CLASS

Design an Inventory class that can hold information and calculate data for items in a retail store’s inventory. The class should have the following private member variables: Variable Name Description itemNumber An int that holds the item’s item number. quantity An int for holding the quantity of the items on hand. cost A double for holding the wholesale per-unit cost of the item totalCost A double for holding the total inventory cost of the item (calculated as quantity times cost). The class should have the following public member functions: Member Function Description Default Constructor Sets all the member variables to 0. Constructor #2 Accepts an item’s number, cost, and quantity as arguments. The function should copy these values to the appropriate member variables and then call the setTotalCost function. setItemNumber Accepts an integer argument that is copied to the itemNumber member variable. setQuantity Accepts an integer argument that is copied to the quantity member variable. setCost Accepts a double argument that is copied to the cost member variable. setTotalCost Calculates the total inventory cost for the item (quantity times cost) and stores the result in totalCost. getItemNumber Returns the value in itemNumber. getQuantity Returns the value in quantity. getCost Returns the value in cost. getTotalCost Returns the value in totalCost. Demonstrate the class in a driver program. Input Validation: Do not accept negative values for item number, quantity, or cost.

Explanation / Answer

#include <iostream>
using namespace std;
#include <string>  
// InventoryItem class declaration.
class InventoryItem
{
private:
string desc; // The item desc
int iitemno;// item number
double cost; // The item cost
double tcost;//total cost
int quantity; // Number of units on hand
public:
InventoryItem()
{
desc="";
iitemno=0;
cost=0.0;
tcost=0.0;
quantity=0;
}
// Constructor
InventoryItem(string desc,int num, double c, int u)
{

// Copy the desc to the allocated memory.
desc= desc;
iitemno=num;
// Assign values to cost and units.
cost = c;
quantity = u;}
  
void setIitemno(int num)
{
iitemno=num;
}
int getIitemno()
{
return iitemno;
}
// Mutator functions
void setdesc(string des )
{ desc= des; }
string getdesc()
{ return desc; }
void setCost(double co)
{
cost=co;
settcost();
}
double getCost() const
{ return cost;
}
void settcost()
{
tcost=cost*quantity;
}
double gettcost()
{
return tcost;
}
void setQuantity(int qu)

{
quantity=qu;
}
int getquantity() const
{ return quantity; }
};
int main()
{
// Create an InventoryItem object and call
// the default constructor.
InventoryItem item1;
item1.setdesc("Hammer"); // Set the desc
item1.setIitemno(2);
item1.setCost(6.95); // Set the cost
item1.setQuantity(12); // Set the units
cout<<"Item 1:"<<endl;
cout<<"desc:"<<item1.getdesc()<<endl;
cout<<"Item Number:"<<item1.getIitemno()<<endl;
cout<<"Quantity:"<<item1.getCost()<<endl;
cout<<"Cost:"<<item1.getCost()<<endl;
cout<<"Total Cost:"<<item1.gettcost()<<endl;
//pause system for a while
system("pause");
}//end main

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