linux下c++读文件夹下的文件及文件夹笔记

#include <stdio.h>#include <stdlib.h>#include <string.h>#include <dirent.h>#include<iostream>using namespace std;#define MAX_LEN 65535void test_list_files(){    DIR *dir;    struct dirent *ptr;    char *flow[MAX_LEN];    int num = 0, i = 0;    if ((dir=opendir("/")) == NULL)    {        cerr<<"Open dir error..."<<endl;        return ;    }    // readdir() return next enter point of directory dir    while ((ptr=readdir(dir)) != NULL)    {        flow[num] = (char*)malloc(sizeof(char));        strcpy(flow[num], ptr->d_name);        num++;    }    for(i = 0; i < num; i++)    {        cout<<flow[i]<<endl;    }    closedir(dir);}