1.          111011100
         +  011001001
         = 1010100101 

2.          0x60AC
         +  0x7D72
         =  0xDE1E

3. 4*19 = 76 = 0x4C, 0x6060F0 + 0x4C = 0x60613C

-rwxr-xr-x   1 ftl      faculty    16896 Apr  9 09:20 qs.xls
-rwxr-xr-x   1 ftl      faculty     4114 Mar 24 12:19 qs.xls.Z

studentdb: studentrec.o studentgroup.o studdb.o
	g++ -o studdb studentrec.o studentgroup.o studdb.o

studentrec.o: studentrec.cpp
	g++ -c studentrec.cpp

studentgroup.o: studentgroup.cpp
	g++ -c studentgroup.cpp

studdb.o: studdb.cpp
	g++ -c studdb.cpp

studentrec.o: studentrec.h
studengroup.o: studentgroup.h
studdb.o: studentrec.h studentgroup.h

class Card {
    friend ostream &operator<<(ostream &, const Card &);
public:
    Card();             // default constructor
    Card(int, int);     // give initial values for suit and rank
    Card(const Card &); // copy constructor
    ~Card();            // destructor
    void display(ostream &) const;
    bool operator==(const Card &) const;
    bool operator<(const Card &) const;
    bool operator>(const Card &) const;
    bool operator<=(const Card &) const;
    bool operator>=(const Card &) const;
    bool operator!=(const Card &) const;
    const Card &operator=(const Card &);
private:
    int suit;           // takes value 0-3 (for clubs, diamonds, etc)
    int rank;           // takes value 0-12 (for deuce, three, etc.)
    static const char *suit_names[4];    // words for displaying suits
    static const char *rank_names[13];   // words for displaying ranks
};

class Deck {
    friend ostream &operator<<(ostream &, const Deck &);
public:
    Deck();             // default constructor
    Deck(const Deck&);  // copy constructor
    ~Deck();            // destructor
    void shuffle();
    const Card &deal();
    bool operator==(const Deck &) const;
    const Deck &operator=(const Deck &);
    void display(ostream &) const;
private:
    Card *cards[52];
    int deal_point;  // keeps track of which card to deal next
};