: Passing functions as arguments to build dynamic, callback-driven architectures.
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#include #include /** * Allocates a contiguous 2D array to optimize CPU cache hits. * @param rows Number of rows * @param cols Number of columns * @return Pointer to an array of row pointers */ int** allocate_contiguous_2d_array(size_t rows, size_t cols) // Allocate memory for the row pointers int** row_pointers = (int**)malloc(rows * sizeof(int*)); if (row_pointers == NULL) return NULL; // Allocate memory for all elements in a single contiguous block int* data_block = (int*)malloc(rows * cols * sizeof(int)); if (data_block == NULL) free(row_pointers); return NULL; // Map row pointers to the contiguous data block for (size_t i = 0; i < rows; i++) row_pointers[i] = data_block + (i * cols); return row_pointers; void free_contiguous_2d_array(int** array) if (array != NULL) // Free the contiguous data block first (stored at the first row pointer) free(array[0]); // Free the pointer array free(array); int main(void) size_t r = 4, c = 5; int** matrix = allocate_contiguous_2d_array(r, c); if (matrix == NULL) fprintf(stderr, "Memory allocation failed\n"); return 1; // Populate and print using pointer arithmetic for (size_t i = 0; i < r; i++) for (size_t j = 0; j < c; j++) *(*(matrix + i) + j) = (int)(i * c + j); printf("%2d ", matrix[i][j]); printf("\n"); free_contiguous_2d_array(matrix); return 0; Use code with caution. Advanced Memory Management and Custom Allocators : Passing functions as arguments to build dynamic,
Note: Always ensure you are obtaining digital copies legally to support the author’s work. #include #include /** * Allocates a contiguous 2D