48arrayptr_class.cpp

#include<iostream>
using namespace std;

class retailshop
{
    int id;
    float price;
    public:
    void setData(int a, float b)
    {
        cout<<"Enter ID : ";
        cin>>a;
        id = a;
        cout<<"Enter Price : ";
        cin>>b;
        price = b;
    }
    getData()
    {
        cout<<"Item ID [ "<<id<<" ] "<<endl
        <<"Price : "<<price<<endl;
    }
};
int main()
{
    int size, a;
    float b;
    cout<<"Enter the number of items on the shelf : "<<endl;
    cin>>size;
    retailshop * ptr = new retailshop[size]; // dynamically allocated size or number of class pointers

    for (int i = 0; i < size; i++)
    {
        (ptr + i)->setData(a, b);
    }
    cout<<endl;
    for (int i = 0; i < size; i++)
    {
        (ptr + i)->getData(); 
        /*
        can use ptr++ as well but it will affect the next loop as after the last loop ends, the ptr will be pointing
        to the last index of array, so before the first loop make a temporary pointer that is similar to the
        original pointer like,
        retailshop * temp_ptr = ptr;
        */ 

    }
    
    
    return 0;
}