Question

I am writing a program that has a class called merchant however when I try to initialize a merchant object which takes in as parameters two arrays something is going wrong as I cannot call the functions within the merchant.cpp. Not sure where the problem is?

Merchant merch(Antique antiques[], int quantities[]); //cout << "Enter in budget: $"; //cin >> budget; cin >> selection; switch (selection) { case '1': merch.haggle(); case '2': merch.printMenu(); case '3': merch.selectAntique(); case '4': default: break;

Answer 1

I have created the code provided by you

In my code a have defined another class called Antique.h to make it easily understandable to you.

Also i have defined another function called display() to show you that all the values are updated.

All code in bold is additional code for better understanding.

main.cpp

#include"Merchant.cpp"

int main()
{

//I took an array of object to Antique class to pass it to the constructor of Merchant class.
   Antique ants[10];

//Initialize the value of member of class Antique
   for(int i=0;i<10;i++)
   {
       ants[i].setA(i);
   }

//An array of type int to represent the quantities.
   int quants[]={0,1,2,3,4,5,6,7,8,9};
  

//Pass both the array to the constructor of newly decleared object of class Merchant.
   Merchant Merch(ants,quants);

//Display and check that the values are updated or not.
   Merch.display();
}

Merchant.h

#ifndef MERCHANT_H
#define MERCHANT_H

#include "Antique.h"

class Merchant
{
   public:
       Merchant(Antique ants[],int quants[]);
       void display();
   private:
       Antique antiques[10];
       int quantities[10];
       float revenue;
};
#endif

Merchant.cpp

#include"Merchant.h"
#include<iostream>
#include<iomanip>
#include<fstream>
using namespace std;

Merchant::Merchant(Antique ants[],int quants[])
{
   for(int i=0;i<10;i++)
   {
       antiques[i]=ants[i];
       quantities[i]=quants[i];
       revenue=0;
   }
}
void Merchant::display()
{
   for(int i=0;i<10;i++)
   {
       cout<<"Antiques:"<<antiques[i].getA()<<" \t Quantity:"<<quantities[i]<<"\nRevenue:"<<revenue<<endl<<endl;
   }
}

Antique.h

//A dummy definition of class Antique to show that the values are stored or not.

class Antique
{
   private:
       int a;
   public:
       void setA(int a_)
       {
           a=a_;
       }
       int getA()
       {
           return a;
       }
};

Antiques : Revenue :0 Quantity: 0 Antiques :1 Revenue :0 Quantity:1 Antiques : 2 Revenue :0 Quantity:2 Antiques :3 Revenue: 0 Quantity:3 Antiques : 4 Revenue :0 Quantity:4 Antiques : 5 Revenue :0 Quantity:5 Antiques : 6 Revenue :0 Quantity: 6 Antiques : 7 Revenue: 0 Quantity:7 Antiques : 8 Revenue :0 Quantity:8 Antiques :9 Revenue :0 Quantity:9 Process exited after 0.03733 seconds with return value w Press any key to continue . . .

As you can see all values are replicated in the specified member variables.

Things to verify.

• Make sure that all your files (that need to include) should be stored in same/home directory i.e. in the same directory where the files are stored that are including those .h files and .cpp files.
• Antique ants[] object should be decleared in the main function and the members should be initialized with some values.