UNIX for Dummies Questions & Answers

#include <sys/types.h>
#include <dirent.h>              
#include "apue.h"

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

    if (argc != 2)
        err_quit("a single argument (the directory name) is required");

    if ((dp = opendir(argv[1])) == NULL)  

        err_sys("can't open %s", argv[1]);

    while ((dirp = readdir(dp)) != NULL){
            printf("%s\n", dirp->d_name);
        }

    closedir(dp);
    exit(0);                    
}

[abc@manager apue]$ ls -la apue.src/
total 12
drwxr-xr-x  3 abc box 4096 12-21 15:57 .
drwxr-xr-x  3 abc box 4096 12-21 21:00 ..
drwxr-xr-x 32 abc box 4096 12-21 15:58 apue.2e
[abc@manager apue]$ ./myls apue.src/
6299739
6299771
6299795
[liurui@manager apue]$

printf("%s\n", dirp->d_name);

printf("%d\n", dirp->d_name);