[Linux C]递归遍历指定目录，以目录树形式展示

/*功能：演示了利用C语言递归遍历指定目录下的子目录(不含隐藏目录)和文件，并以目录树形式展示!其中编译命令为：gcc -o travel travel.c -std=c99*/#include <stdio.h>#include <dirent.h>#include <stdlib.h>#include <string.h>void List(char *path, int level){struct dirent *ent = NULL;DIR *pDir;if((pDir = opendir(path)) != NULL){while(NULL != (ent = readdir(pDir))){if(ent->d_type == 8)// d_type：8-文件，4-目录{for(int i = 0; i < level; i++)printf("--");printf("%s\n", ent->d_name);}else if(ent->d_name[0] != '.'){for(int i = 0; i < level; i++)printf("+ ");char *p = malloc(strlen(path) + strlen(ent->d_name) + 2);strcpy(p, path);strcat(p, "/");strcat(p, ent->d_name);printf("%s\n", ent->d_name);List(p, level+1);// 递归遍历子目录free(p);}}closedir(pDir);}}int main() {         char path[] = "/home/zcm/program/eclipse";List(path, 0);return 0; }