Workshop problem

#include<iostream>

using namespace std;

//Define the structs Workshops and Available_Workshops.
//Implement the functions initialize and CalculateMaxWorkshops
struct Workshop{
    int start_time;
    int duration;
    int end_time;
};
struct Available_Workshops{
    int n;
    Workshop *workshops = new Workshop[n];
};

Available_Workshops* initialize (int start_time[],int duration[],int n){
    cout<<"testing ok."<<endl;
    Available_Workshops *data = new Available_Workshops[n];
    //cout<<"testing ok.";
        for(int i=0;i<n;i++){
            cout<<"i: "<<i<<endl;
            data[i].workshops->start_time = start_time[i];
            data[i].workshops->duration = duration[i];
            data[i].workshops->end_time = start_time[i]+duration[i];
        }
        cout<<"testing ok.end of for loop inside initialize."<<endl;    
    return data;
}
int CalculateMaxWorkshops(Available_Workshops* ptr){
int count=1;

return count;       
}

int main(int argc, char *argv[]) {
    #ifndef ONLINE_JUDGE
    freopen("input.txt","r",stdin);
    freopen("output.txt","w",stdout);
    #endif
    //cout<<"testing ok. starting point.";
    int n; // number of workshops
    cin >> n;
    // create arrays of unknown size n
    int* start_time = new int[n];
    int* duration = new int[n];

    for(int i=0; i < n; i++){
        cin >> start_time[i];
    }
    for(int i = 0; i < n; i++){
        cin >> duration[i];
    }

    Available_Workshops * ptr;
    ptr = initialize(start_time,duration, n);
    cout << CalculateMaxWorkshops(ptr) << endl;
    return 0;
}