LinuxQuestions.org - Changing directory

Ok i've written some code which implements the cd command. Problem is it doesn't actually seem to change the directory at all. It says it has but when u do a pwd ur still in the same directory!!! WHY???????????????

Code:

/*The following code will implement the*

 *cd (change directory) command in UNIX.*/

#include <pwd.h>

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

#include <unistd.h>



int main(int argc,char **argv){

  uid_t me;

  struct passwd *user;

  if(argc>1 && argv[1] != NULL){

    if((errno = chdir(argv[1])) == ENOTDIR){

      fprintf(stderr,"Can't change to %s\n",argv[1]);

      return -1;

    }else

          printf("Changed to %s\n",argv[1]);

  }else{

    me = getuid();

    user = getpwuid(me);

    if(!user){

      fprintf(stderr,"Couldn't find user %d\n",(int) me);

      exit(EXIT_FAILURE);

    }

    if((errno = chdir(user->pw_dir)) == ENOTDIR){

      fprintf(stderr,"Can't change to %s\n",user->pw_dir);

      return -1;

    }else

          printf("Changed to %s\n",user->pw_dir);

  }

  return EXIT_SUCCESS;

}