#include <iostream>
#include <vector>
using namespace std;

struct Complex {
    double real, imag;
};

enum Suit { CLUBS, DIAMONDS, HEARTS, SPADES };

enum Rank { ACE=1, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE,
    TEN, JACK, QUEEN, KING };

struct Card
{
    Rank rank;
    Suit suit;

    Card (Suit s, Rank r);
    void print() const;
};

Card::Card (Suit s, Rank r) {
    suit = s;  rank = r;
}

void Card::print () const
{
    vector<string> suits (4);
    suits[0] = "Clubs";
    suits[1] = "Diamonds";
    suits[2] = "Hearts";
    suits[3] = "Spades";

    vector<string> ranks (14);
    ranks[1] = "Ace";
    ranks[2] = "2";
    ranks[3] = "3";
    ranks[4] = "4";
    ranks[5] = "5";
    ranks[6] = "6";
    ranks[7] = "7";
    ranks[8] = "8";
    ranks[9] = "9";
    ranks[10] = "10";
    ranks[11] = "Jack";
    ranks[12] = "Queen";
    ranks[13] = "King";

    cout << ranks[rank] << " of " << suits[suit] << endl;
}

class employee;
typedef vector<employee*> employeeList;

class employee {
public:
    string name;
    string title;
    double salary;
    employee* supv;  // pointer to supervisor
    employeeList subordinate;

    // constructors
    employee () {
        name = title = "";
        supv = NULL;
    }

    employee (string N, string T, employee* S) {
        name = N;
        title = T;
        supv = S;
    }
};

int x;
int& rx = x; // this makes rx an alias for x

int main () {

    x = 43;
    rx = 17;
    cout << rx << ", " << x << endl;

    int someNumber = 12345;
    int* ptrSomeNumber = &someNumber;

    cout << "someNumber = " << someNumber << endl;
    cout << "ptrSomeNumber = " << ptrSomeNumber << endl;
    cout << "ptrSomeNumber points to " << *ptrSomeNumber << endl;

    int* px = &x;

    while (px != NULL) {
        cout << "Pointer px points to something\n";
        px = NULL;
    }

    cout << "Pointer px points to null, nothing, nada!\n";

    Card* cardPtr = new Card (DIAMONDS, ACE);

    (*cardPtr).rank = Rank( (*cardPtr).rank + 1 ); // using parens and * operator
    cout << "rank = " << (*cardPtr).rank << endl;
    (*cardPtr).print();

    cardPtr->rank = Rank( cardPtr->rank + 1 );  // using -> abbreviation
    cout << "rank = " << cardPtr->rank << endl;
    cardPtr->print();


    // make a little employee database
    employee* pAlice = new employee ("Alice", "pres", NULL); // no supervisor
    (*pAlice).salary = 150000;
    pAlice->salary = 150000; // the C++ arrow abbreviation
    employee* pBob = new employee ("Bob", "VP mfg", pAlice);
    pBob->salary = 103040;
    employee* pCarol = new employee ("Carol", "VP sales", pAlice);
    pCarol->salary = 125000;
    employee* pJoe = new employee ("Joe", "welder", pBob);
    pJoe->salary = 50000;
    cout << "Joe the " << pJoe->title
        << " makes $" << pJoe->salary
        << " and his boss " << pJoe->supv->name
        // above is the same as (*(*pJoe).supv).name
        << " makes $" << pJoe->supv->salary << endl;

    // Joe gets a new job and a raise
    pJoe->supv = pCarol; // new boss
    pJoe->title = "salesman"; // new job
    pJoe->salary *= 1.1; // 10% raise
    cout << "Joe the " << pJoe->title
        << " makes $" << pJoe->salary
        << " and his boss " << pJoe->supv->name
        << " makes $" << pJoe->supv->salary << endl;
    // initialize subordinate member variable
    pAlice->subordinate = employeeList(2);
    pAlice->subordinate[0] = pBob;
    pAlice->subordinate[1] = pCarol;

    cout << "Alice supervises:" << endl;
    for (int i = 0; i < pAlice->subordinate.size(); i++)
    	cout << pAlice->subordinate[i]->name << " makes "
    	<< pAlice->subordinate[i]->salary << endl;

    return 0;
}