/*** Listing a directory ***/
#include<stdio.h>
#include<dirent.h>
#include<stdlib.h>
#include<unistd.h>

int main(){
   DIR *d;
   struct dirent *entry;
   d=opendir(".");
   printf(" -my ls:\n");
   while((entry=readdir(d))!=NULL){
      if((*entry).d_name[0]!='.')
         printf("%s\t",(*entry).d_name);
      }
   closedir(d);

   printf("\n -system ls:\n");
   chdir("."); // Actually not necessary, just an example
   system("ls");
   return 0;
   }