#include <iostream>

// M x N matrix
#define M 4
#define N 5

// Dynamically Allocate Memory for 2D Array in C++
int main()
{
	// dynamically create array of pointers of size M
	int** A = new int*[M];

	// dynamically allocate memory of size N for each row
	for (int i = 0; i < M; i++)
		A[i] = new int[N];

	// assign values to allocated memory
	for (int i = 0; i < M; i++)
		for (int j = 0; j < N; j++)
			A[i][j] = rand() % 100;

	// print the 2D array
	for (int i = 0; i < M; i++)
	{
		for (int j = 0; j < N; j++)
			std::cout << A[i][j] << " ";

		std::cout << std::endl;
	}

	// deallocate memory using delete[] operator
	for (int i = 0; i < M; i++)
		delete[] A[i];

	delete[] A;

	return 0;
}