Calculate total price of products (Using struct)

#include <iostream>
using namespace std;
int main()
{
    struct product {
        long int barcode;
        string name;
        float weight;
        float price;
        int quantity;
    };
    int n;
    product prod[50];
    product* q;
    q = prod;
    float total=0;
    cout << "Enter a number of products: "<<endl;
    cin >> n;
    cout << "Product info: " << endl;
    for (int i = 0; i < n; i++) { //loop for inputting product info
        cout << "Product number "<<i+1<<": "<<endl;
        cout << "Enter barcode: "<<endl;
        cin >> q->barcode;
        cout << "Enter name: " << endl;
        cin >> q->name;
        cout << "Enter weight: " << endl;
        cin >> q->weight;
        cout << "Enter price: " << endl;
        cin >> q->price;
        cout << "Enter quantity: " << endl;
        cin >> q->quantity;
        total = total+ (q->price*q->quantity);
        q++;
    }
    cout << "The "<<n<<" types of products cost a total of "<<total;
}