upośledzony ls -l w C

#include "stdio.h"
#include "sys/types.h"
#include "dirent.h"
#include "errno.h"
#include "string.h"
#include "stdlib.h"
#include "sys/stat.h"
int main(int argc, char *argv[]){
struct stat st;
    DIR *pDIR;
    int size;
    struct dirent *pDirEnt;
    pDIR=opendir (".");
    if(pDIR==NULL){
        fprintf(stderr, "%s %d:opendir() failed (%s)\n", __FILE__, __LINE__,strerror(errno));
        exit(-1);}
    pDirEnt=readdir(pDIR);
    while(pDirEnt !=NULL){
        printf("%s ", pDirEnt->d_name);
        stat(pDirEnt->d_name, &st);
        size = st.st_size;
        printf("%d bajtow \n", size);
        pDirEnt=readdir(pDIR);}
    closedir(pDIR);
    return 0;
}

//ls -l
//ls -R
// +3 dowolne inne opcje
//ls -l /etc podanie katologu wywołania