#include <iostream>

using namespace std;

struct ArrayT {
   int * data{nullptr};
   size_t capacity{0};
   size_t size{0};

};

void MakeArray(ArrayT & ary, size_t newCapacity);
void TellAboutArray(const ArrayT & ary);
//void GrowArray(ArrayT & ary, size_t newCapacity);
void PrintArray(ArrayT & array);
void CleanUpArray(ArrayT & array);

int main() {
    ArrayT ary;

    TellAboutArray(ary);

    MakeArray(ary,10);
    TellAboutArray(ary);

    ary.data[ary.size++] = 10;
    TellAboutArray(ary);
    PrintArray(ary);

    CleanUpArray(ary);

    return 0;
    
}


void MakeArray(ArrayT & ary, size_t newCapacity){
    if (ary.data != nullptr) {
       cout << "Error, can not make a new array, it already exists" << endl;
    } else {
        ary.data = new int[newCapacity];
        ary.size = 0;
        ary.capacity = newCapacity;
    }
}

void TellAboutArray(const ArrayT & ary){
    if(ary.data == nullptr) {
        cout << "This array has not been allocated" << endl;
    } else {
        cout << "This array holds " << ary.capacity << " elements." << endl;
        cout << "This array has " << ary.size << " elements." << endl;
    }
    cout << endl;
}

void PrintArray(ArrayT & array){
    if(array.data != nullptr) {
       for(size_t i =0; i < array.size; ++i) {
          cout << "array[" << i <<"] = " << array.data[i] << endl;
       }
    } else {
       cout << "Error, the array is not allocated " << endl;
    }
    cout << endl;
}

void CleanUpArray(ArrayT & array){
    if(array.data != nullptr) {
       delete[] array.data;
    }
}