Greedy - Activity Selection

#include <iostream>

using namespace std;

struct Activity
{
    string name;
    double startingTime;
    double endingTime;
};

void showActivities(Activity*, int, string);
void takeActivityDetails(Activity*, int);
void sortByEndingTime(Activity*, int);
int selectActivities(Activity*, Activity*, int);

int main(void)
{
    cout << "How many activities? No: ";
    int size; cin >> size;

    Activity* activities = new Activity[size];
    takeActivityDetails(activities, size);
    showActivities(activities, size, "Given");

    Activity* selected = new Activity[size];
    int total = selectActivities(activities, selected, size);

    // cout << "\nTotal: " << total << endl;

    showActivities(selected, total, "Selected");

    return 0;
}

void showActivities(Activity* arr, int n, string type)
{
    cout << endl << type << " activities:\n";
    for ( int i = 0; i < n; ++i )
    {
        cout << "-> " << arr[i].name << " " << arr[i].startingTime << " "
        << arr[i].endingTime << endl;
    }
}

void takeActivityDetails(Activity* arr, int n)
{
    for ( int i = 0; i < n; ++i )
    {
        cout << "\nActivity " << (i + 1) << ":" << endl;
        cout << "Name: "; cin >> arr[i].name;
        cout << "Start-time: "; cin >> arr[i].startingTime;
        cout << "End-time: "; cin >> arr[i].endingTime;
    }
}

void sortByEndingTime(Activity* arr, int n)
{
    for (int i = 1; i <= n - 1; i++) {
        int LOC = i;
        Activity VAL = arr[LOC];
        while (LOC > 0 && arr[LOC - 1].endingTime > VAL.endingTime) {
            arr[LOC] = arr[LOC - 1];
            LOC--;
        }
        arr[LOC] = VAL;
    }
}

int selectActivities(Activity* activities, Activity* selected, int size)
{
    int i = 0, j = 1, count = 1;
    selected[0] = activities[0];
    while ( j <= size )
    {
        if ( activities[i].endingTime <= activities[j].startingTime )
        {
            selected[count++] = activities[j];
            i = j;
        }
        j++;
    }
    return count;
}