#include <iostream>
#include <stdio.h>
#include <sys/types.h>
#include <pwd.h>

using namespace std;

int main() {
    passwd * user;
    bool gotOne = false;

    user=  getpwent();
    while (user != NULL) {
       cout << user->pw_name << ":"<< user->pw_uid << endl;
       gotOne = true;
       user=  getpwent();
    }

    if (gotOne) {
       cout << endl;
       cout << "Starting over " << endl;
       setpwent();
    } else {
       perror("getpwent: ");
       return 1;
    }

    user=  getpwent();
    cout << "The first field is " << user->pw_name 
         << " " << user->pw_gecos << endl;
	
    endpwent();

    return 0;
}