cppMoveLeftBADFixed

#include <iostream>

int main()
{
    const int horizon{ 4 };
    const int vertical{ 4 };


    int arr[vertical][horizon]{ {1, 15, 3, 4}, {5, 0, 6, 7}, {8, 9, 10, 11}, {12, 13, 14, 2} };

    // std::cout << "enter direction of shift 1-right, 2-left, 3-up, 4-down: ";
    // std::cin >> dir;

    for (int y{ 0 }; y < vertical; ++y)
    {
        int copy;
        for (int x{ 0 }; x < horizon; ++x)
        {

            int shift_h{ 0 };
            int shift_v{ 0 };

            /* if (arr[n][i+1] == 0)  // right
             {
                     shift_v = 0;
                     shift_h = 1 ;

             }*/
            if (arr[y][x - 1] == 0)  // left
            {
                shift_h = -1;

                copy = arr[y][x];
                arr[y][x] = 0;
                arr[y][x + shift_h] = copy;

                ++x;
            }

        }
    }


    for (int y{ 0 }; y < vertical; ++y)
    {
        for (int x{ 0 }; x < horizon; ++x)
        {
            std::cout << arr[y][x] << '\t';
        }
        std::cout << '\n';
    }

    return 0;
}