class Player {   protected:    string name;    double weight;    double height;   public:    Player(string n, double w, double h)      { name = n; weight = w; height = h; }    string getName() const      { return name; }    virtual void printStats() const = 0; };   class BasketballPlayer : public Player {   private:    int fieldgoals;    int attempts;   public:    BasketballPlayer(string n, double w,     double h, int fg, int a) : Player(n, w, h)      { fieldgoals = fg; attempts = a; }    void printStats() const      { cout << name << endl;         cout << "Weight: " << weight;         cout << " Height: " << height << endl;        cout << "FG: " << fieldgoals;        cout << " attempts: " << attempts;        cout << " Pct: " << (double) fieldgoals / attempts << endl; } }; a. What does = 0 after function printStats() do? b. Would the following line in main() compile: Player p; -- why or why not? c. Could I remove the printStats() member function from BasketballPlayer?  Why or why not? d. Would the following line in main() compile: Player *ptr; -- why or why not? e. Write code which creates a Player pointer (e.g. Player *p), creates an object of class BasketballPlayer, and assigns the address of the object to the pointer.  Why does this work?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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class Player

{

  protected:

   string name;

   double weight;

   double height;

  public:

   Player(string n, double w, double h)

     { name = n; weight = w; height = h; }

   string getName() const

     { return name; }

   virtual void printStats() const = 0;

};

 

class BasketballPlayer : public Player

{

  private:

   int fieldgoals;

   int attempts;

  public:

   BasketballPlayer(string n, double w,

    double h, int fg, int a) : Player(n, w, h)

     { fieldgoals = fg; attempts = a; }

   void printStats() const

     { cout << name << endl; 

       cout << "Weight: " << weight; 

       cout << " Height: " << height << endl;

       cout << "FG: " << fieldgoals;

       cout << " attempts: " << attempts;

       cout << " Pct: " << (double) fieldgoals / attempts << endl; }

};

a. What does = 0 after function printStats() do?

b. Would the following line in main() compile: Player p; -- why or why not?

c. Could I remove the printStats() member function from BasketballPlayer?  Why or why not?

d. Would the following line in main() compile: Player *ptr; -- why or why not?

e. Write code which creates a Player pointer (e.g. Player *p), creates an object of class BasketballPlayer, and assigns the address of the object to the pointer.  Why does this work?

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