#include <iostream>
#include <stdio.h>

#include <sys/types.h>   // for getpwnam
#include <pwd.h>         // for getpwnam

#include <unistd.h>   // getuid

using namespace std;

int main() {
     uid_t id;
     string name;

     passwd * theEntry;

     id = getuid();
     cout << "The UID = " << id << endl;

     theEntry = getpwuid(id);

     if (theEntry == NULL) {
        perror("Failed to get password entry");
	return 1;
     }

     cout << "Hello " << theEntry->pw_name << endl;
     cout << "\tDid you know your encrypted password is " 
          << theEntry->pw_passwd << endl;
     cout << "\tYour default group number is " << theEntry->pw_gid << endl;
     cout << "\tYour gecos field contains " << theEntry->pw_gecos << endl;
     cout << "\tYour home directory is " << theEntry->pw_dir << endl;
     cout << "\tYour default shell is " << theEntry->pw_shell << endl;

     cout << endl;
     cout << "Enter the user name of someone else=> ";
     cin >> name;
     cout << endl;
     theEntry = getpwnam(name.c_str());
     if (theEntry == NULL) {
        perror("Failed to get password entry ");
	cerr << "This was for " << name << endl;
	return 0;
     }

     cout << endl;
     cout << "Information on " << name << endl;
     cout << "\tuid: " << theEntry->pw_uid << endl;
     cout << "\tencrypted password: " << theEntry->pw_passwd << endl;
     cout << "\tdefault group number: " << theEntry->pw_gid << endl;
     cout << "\tgecos: " << theEntry->pw_gecos << endl;
     cout << "\thome directory: " << theEntry->pw_dir << endl;
     cout << "\tdefault shell: " << theEntry->pw_shell << endl;
     return 0;
}