int **matrix = (int**) calloc(rows, sizeof

(int*));

    if(!matrix)

    {

        printf("MEMORY_ALLOCATION_ERROR_MESSAGE");

        exit(-1);

    }

    for (int i = 0; i < rows; ++i) {

        matrix[i] = (int*) calloc(cols, sizeof

(int));

        if(!matrix[i])

        {

            printf("MEMORY_ALLOCATION_ERROR_MESSAGE");

            exit(-1);

        }

    }

    return matrix;

}