deleteLastLineIn2dDynArr

#include <iostream>

int main()
{
    int ySize{ 10 };
    int xSize{ 10 };

    int** arr2d { new int* [ySize] };

    for (int y{ 0 }; y < ySize; ++y)
    {
        arr2d[y] = new int[xSize];
    }

    for (int y{ 0 }; y < ySize; ++y)
    {
        for (int x{ 0 }; x < xSize; ++x)
        {
            arr2d[y][x] = rand() % 10;
        }
    }

    for (int y{ 0 }; y < ySize; ++y)
    {
        for (int x{ 0 }; x < xSize; ++x)
        {
            std::cout << arr2d[y][x] << ' ';
        }
        std::cout << '\n';
    }
    std::cout << '\n';

    delete[] arr2d[ySize - 1];
    int** tmp = new int * [--ySize];
    for (int y{ 0 }; y < ySize; ++y)
    {
        tmp[y] = arr2d[y];
    }
    delete[] arr2d;
    arr2d = tmp;

    std::cout << "New ySize is: " << ySize << "\n\n";

    for (int y{ 0 }; y < ySize; ++y)
    {
        for (int x{ 0 }; x < xSize; ++x)
        {
            std::cout << arr2d[y][x] << ' ';
        }
        std::cout << '\n';
    }
    std::cout << '\n';

    for (int y{ 0 }; y < ySize; ++y)
    {
        delete[] arr2d[y];
    }
    delete[] arr2d;
}