BV0242dDynArrPractice

#include <iostream>

template <typename T>
void printArr(T* arr, int arrSize)
{
    for (int i{ 0 }; i < arrSize; ++i)
    {
        std::cout << arr[i] << '\t';
    }
    std::cout << '\n';
}

template <typename T>
void printArr(T arr[][3], int xSize, int ySize)
{
    for (int y{ 0 }; y < ySize; ++y)
    {
        printArr(arr[y], xSize);
    }
    std::cout << '\n';
}

template <typename T>
void printArr(T** arr, int xSize, int ySize)
{
    for (int y{ 0 }; y < ySize; ++y)
    {
        printArr(arr[y], xSize);
    }
    std::cout << '\n';
}

template <typename T>
void fillArr(T** arr, int xSize, int ySize)
{
    for (int y{ 0 }; y < ySize; ++y)
    {
        for (int x{ 0 }; x < xSize; ++x)
        {
            arr[y][x] = rand() % 10;
        }
    }
}


int main()
{
    const int ySize{ 3 };
    const int xSize{ 3 };
    int arr2d[ySize][xSize]
    {
        {1,2,3},
        {4,5,6},
        {7,8,9}
    };

    char str[xSize]{ 'a','s','d' };
    //char* dynStr{ new char[xSize] {'d','y','n'} };
    int arr[xSize]{1,2,3};
    int* ptr;
    ptr = new int[xSize]{1, 2, 3};

    //int* arr2dDyn{ new int[xSize] {1,2,3} };
    int** arr2dDyn{ new int* [ySize] {nullptr,nullptr,nullptr} };

    //int* bigArr{ new int[ySize * xSize]{1,2,3,4,5,6,7,8,9} };
    //for (int y{ 0 }; y < ySize; ++y)
    //{
    //  arr2dDyn[y] = bigArr + (xSize * y);
    //}

    arr2dDyn[0] = new int[3];
    arr2dDyn[1] = new int[100];
    arr2dDyn[2] = new int[2];

    //for (int y{ 0 }; y < ySize; ++y)
    //{
    //  arr2dDyn[y] = new int[xSize];
    //}

    fillArr(arr2dDyn, ySize, xSize);
    printArr(arr2dDyn, ySize, xSize);

    arr2dDyn[0][0] = 444;

    std::cout << arr2dDyn[0][0] << '\n';

    printArr(arr2dDyn, ySize, xSize);

    for (int y{ 0 }; y < ySize; ++y)
    {
        delete[] arr2dDyn[y];
    }
    //delete[] bigArr;
    delete[] arr2dDyn;

    /*printArr(arr2d, ySize, xSize);
    std::cout << '\n';
    printArr(arr2d[1], xSize);
    std::cout << '\n';
    printArr(str, xSize);
    std::cout << '\n';
    printArr(dynStr, xSize);*/

    delete[] ptr;
    return 0;
}