2D Dynamic Array With Pointers With Menu

2Dynamic2DArrayWithUserInput.cpp

#include <iostream>
#include <iomanip>
#include <string>

using std::cout;
using std::cin;
using std::endl;

int main() {

	int counter = 0;

	// User input
	int dimension;
	cout << "Would you like a 2*2 or 3*3 grid?" << endl;
	cout << "Enter 2 for 2*2 and 3 for 3*3: " << endl;
	cin >> dimension;

	// Create the array
	// Start with normal pointer array
//	int* arr = new int[dimension];
	// Change to an array of pointers
	int** arr = new int*[dimension];

	// Allocate each pointer in the array with the number of "cols"
	for (int i = 0; i < dimension; ++i) {
		arr[i] = new int[dimension];
	}

	// Check to see how many values need to be entered
	cout << "Please enter " << dimension*dimension << " values: " << endl;


	// Populate the array with values
	for (int j = 0; j < dimension; ++j) {
		for (int i = 0; i < dimension; ++i) {
			cout << "Enter value " << counter++ << ": ";
			cin >> arr[j][i];
		}
	}

	// Print the 2D array
	for (int k = 0; k < dimension; ++k) {
		for (int i = 0; i < dimension; ++i) {
			if(i == (dimension-1))
			{
				cout << arr[k][i] << " " << endl;
			}
			else
			{
				cout << arr[k][i] << " ";
			}

		}
	}

	// Deallocate memory

	// Deallocate the news in each row
	for (int l = 0; l < dimension; ++l) {
		delete[] arr[l];
	}

	// Deallocate the main arr
	delete[] arr;

	return 0;
}