cpparr2dBasics

#include <iostream>

void printArr(int* arr, int size)
{
    for (int i{ 0 }; i < size; ++i)
    {
        std::cout << arr[i] <<' ';
    }
    std::cout << '\n';
}

void printArr(int arr[][4], int sizeY, int sizeX)
{
    for (int y{ 0 }; y < sizeY; ++y)
    {
        for (int x{ 0 }; x < sizeX; ++x)
        {
            std::cout << arr[y][x] << ' ';
        }
        std::cout << '\n';
    }
    std::cout << '\n';
}

void printArr(int** arr, int sizeY, int sizeX)
{
    for (int y{ 0 }; y < sizeY; ++y)
    {
        for (int x{ 0 }; x < sizeX; ++x)
        {
            std::cout << arr[y][x] << ' ';
        }
        std::cout << '\n';
    }
    std::cout << '\n';
}


int main()
{
    const int arrSize{ 5 };

    const int arrSizeY{ 3 };
    const int arrSizeX{ 4 };

    int arr[arrSize]{ 1,2,3,4,5 };


    int arr2D[arrSizeY][arrSizeX]{ {1,2,3,4},{5,6,7,8},{9,10,11,12} };

    int* dynArr{ new int[arrSize] {6,7,8,9,10} };

    int** dyn2DArr{ new int* [arrSizeY] {
                                            new int[arrSizeX] {1,2,3,4},
                                            new int[arrSizeX] {5,6,7,8},
                                            new int[arrSizeX] {9,10,11,12}
                                        }
                };

    // 1
    //  dyn2DArr[0] -> int* -> nullptr
    //  dyn2DArr[1] -> int* -> nullptr
    //  dyn2DArr[2] -> int* -> nullptr


    // 2
    //  dyn2DArr[0] -> int* -> new int[arrSizeX] {1,2,3,4}
    //  dyn2DArr[1] -> int* -> new int[arrSizeX] {5,6,7,8}
    //  dyn2DArr[2] -> int* -> new int[arrSizeX] {9,10,11,12}
    //



    //for (int y{ 0 }; y < arrSizeY; ++y)
    //{
    //  dyn2DArr[y] = new int[arrSizeX] {};
    //}

    *(*(dyn2DArr + 1) + 1) = 99;


    printArr(dyn2DArr, arrSizeY, arrSizeX);

    for (int y{ 0 }; y < arrSizeY; ++y)
    {
        delete[] dyn2DArr[y];
    }

    delete[] dyn2DArr;

    //printArr(arr, arrSize);
    //printArr(dynArr, arrSize);

    //std::cout << '\n';

    //printArr(arr2D, arrSizeY, arrSizeX);

    delete[] dynArr;
}