量化交易之Linux高级篇 - apue - 遍历指定目录

apue库环境相关:

​​apue库的配置过程, 以及对过程中产生错误的处理​​；

cmake_minimum_required(VERSION 3.0)

project(ApueProject)

set(src main.cc)

set(CMAKE_CXX_STANDARD 17)

link_libraries(apue)

add_executable(main ${src})

#include <iostream>
#include <apue.h>
#include <dirent.h>

using namespace std;
using DIRENT = struct dirent;

int main(int argc, const char * const argv[]) {
    
    DIR *dp;
    DIRENT *dirp;

    if (argc != 2) {
        err_quit("usage: ls directory_name\n");
    }
    
    
    if ((dp = opendir(argv[1])) == nullptr) {
        err_sys("can not open %s\n", argv[1]);
    }

    while ((dirp = readdir(dp)) != nullptr) {
        cout << dirp->d_name << endl;
        cout << dirp->d_type << endl;
        cout << dirp->d_ino << endl;
        cout << dirp->d_off << endl;
        cout << dirp->d_reclen << endl;
        cout << "----------------------------" << endl;
    }

    closedir(dp);
    return 0;
}