[cpp]

　　#include

　　#include

　　#include

　　#include

　　#include

　　#include

　　#include

　　#define MAX_PATH_LENGTH 512

　　#define MAX_FILE_EXTENSION 9

　　unsigned long visit_dirs = 0;

　　unsigned long visit_files = 0;

　　void listdir(char *path){

　　DIR *ptr_dir;

　　struct dirent *dir_entry;

　　int i = 0;

　　char *child_path;

　　char *file_path;

　　child_path = (char*)malloc(sizeof(char)*MAX_PATH_LENGTH);

　　if(child_path == NULL){

　　printf("allocate memory for path failed.\n");

　　return;

　　}

　　memset(child_path, 0, sizeof(char)*MAX_PATH_LENGTH);

　　file_path = (char*)malloc(sizeof(char)*MAX_PATH_LENGTH);

　　if(file_path == NULL){

　　printf("allocate memory for file path failed.\n");

　　free(child_path);

　　child_path = NULL;

　　return;

　　}

　　memset(file_path, 0, sizeof(char)*MAX_PATH_LENGTH);

　　ptr_dir = opendir(path);

　　while((dir_entry = readdir(ptr_dir)) != NULL){

　　if(dir_entry->d_type & DT_DIR){

　　if(strcmp(dir_entry->d_name,".") == 0 ||

　　strcmp(dir_entry->d_name,"..") == 0){

　　continue;

　　}

　　sprintf(child_path, "%s/%s", path, dir_entry->d_name);

　　printf("[DIR]%s\n", child_path);

　　visit_dirs++;

　　listdir(child_path);

　　}

　　if(dir_entry->d_type & DT_REG){

　　sprintf(file_path, "%s/%s", path, dir_entry->d_name);

　　printf("[FILE]%s\n", file_path);

　　visit_files++;

　　}

　　}

　　free(child_path);

　　child_path = NULL;

　　free(file_path);

　　file_path = NULL;

　　}

　　int main(int argc, char* argv[]){

　　if(argc == 2){

　　listdir(argv[1]);

　　printf("Total DIR: %ld, Total FILE: %ld\n", visit_dirs, visit_files);

　　}else{

　　printf("Usage: listdir