Recreating a basic Dynamic Array

Create a class DynamicArray that managers an int array. It should haveA

• A int* array, and int size member.
• A constructor that accepts the size of the array and initializes it with zeroes.
• A destructor that frees the allocated memory.
• A method to print the array.

Demonstrate the program by creating a DynamicArray object in a function call, and let the object go out of scope.

Answer

#include <iostream>

class DynamicArray {
public:
    int* array;
    int size;
    // Constructor
    DynamicArray(int _size) {
        size = size;
        array = new int[size];
        for (int i = 0; i < size; i++) {
            array[i] = 0; // Initialize with zeroes
        }
        std::cout << "Array of size " << size << " created.\n";
    }

    // Destructor
    ~DynamicArray() {
        delete[] array;
        std::cout << "Array of size " << size << " deleted.\n";
    }

    // Method to print the array
    void printArray() {
        for (int i = 0; i < size; i++) {
            std::cout << array[i] << " ";
        }
        std::cout << std::endl;
    }
};

// Function to demonstrate the DynamicArray class destructor
void demonstrateDynamicArray() {
    DynamicArray da(5); // Create a DynamicArray object of size 5
    da.printArray(); // Print the array
} // Destructor will be automatically called when function returns

int main() {
    demonstrateDynamicArray();
    return 0;
}