Implement in C the following ls Unix command using system calls

Implement in C the following ls Unix command using system calls

#include <sys/types.h>
#include <sys/dir.h>
#include <sys/param.h>
#include <stdio.h>

#define FALSE 0
#define TRUE 1

extern  int alphasort();

char pathname[MAXPATHLEN];

main()   {
int count,i;
struct dirent **files;
int file_select();

if (getwd(pathname) == NULL )
{ printf("Error getting pathn");
exit(0);
}
            printf("Current Working Directory = %sn",pathname);
        count = scandir(pathname, &files, file_select, alphasort);

                if (count <= 0)
        {         printf("No files in this directoryn");
                                exit(0);
                        }
                printf("Number of files = %dn",count);
            for (i=1;i<count+1;++i)
                 printf("%s  \n",files[i-1]->d_name);
               
        }





int file_select(struct direct   *entry)

{
if ((strcmp(entry->d_name, ".") == 0) ||(strcmp(entry->d_name, "..") == 0))
                         return (FALSE);
else
                return (TRUE);
        }