Spring 2013 - PIC 10C: Advanced Programming

• Tu 2-4pm

1. Example 1

   #include <iostream>
   
   using namespace std;
   
   class B
   {
   public:
       B();
       B(int n);
   };
   
   B::B()
   {
       cout << "B::B()\n";
   }
   
   B::B(int n)
   {
       cout << "B::B(" << n << ")\n";
   }
   
   class D : public B
   {
   public:
       D();
       D(int n);
   private:
       B b;
   };
   
   D::D()
   {
       cout << "D::D()\n";
   }
   
   D::D(int n) : B(n)
   {
       b = B(-n);
       cout << "D::D(" << n << ")\n";
   }
   
   int main()
   {
       D d(3);
       return 0;
   }
       

2. Example 2

   #include <iostream>
   
   using namespace std;
   
   class B
   {
   public:
       B();
       virtual void p() const;
       void q() const;
   };
   
   B::B()
   {
   }
   
   void B::p() const
   {
       cout << "B::p()\n";
   }
   
   void B::q() const
   {
       cout << "B::q()\n";
   }
   
   class D : public B
   {
   public:
       D();
       virtual void p() const;
       void q() const;
   };
   
   
   D::D()
   {
   }
   
   void D::p() const
   {
       cout << "D::p()\n";
   }
   
   void D::q() const
   {
       cout << "D::q()\n";
   }
   
   int main()
   {
       B b;
       D d;
       B* pb = new B();
       B* pd = new D();
       D* pd2 = new D();
   
       b.p(); b.q();
       d.p(); d.q();
       pb->p(); pb->q();
       pd->p(); pd->q();
       pd2->p(); pd2->q();
       return 0;
   }
       

3. Example 3

   #include <iostream>
   #include <string>
   
   using namespace std;
   
   class Person
   {
   public:
       Person(); // Default Constructor
       Person(string name, int age); // Constructor with parameters
       Person(const Person &other); // Copy Constructor
       virtual ~Person(); // Destructor
   
       Person& operator= (const Person &other); // Copy assignment operator
   private:
       string name;
       int age;
   };
   
   Person::Person()
   {
       name = "John Doe";
       age = 41;
       cout << "Person::Person() [Who am I?]\n";
   }
   
   Person::Person(string name, int age) : name(name), age(age)
   {
       cout << "Person::Person(" << name << ", " << age << ")\n";
   }
   
   Person::Person(const Person &other) : name(other.name), age(other.age)
   {
       cout << "Person::Person(" << name << ", " << age << ") [Copied from someone else]\n";
   }
   
   Person::~Person()
   {
       cout << name << " just passed away\n";
   }
   
   Person& Person::operator=(const Person &other)
   {
       this->name = other.name;
       this->age = other.age;
       cout << "Copying from Person(" << name << ", " << age << ") [assignment operator]\n";
       return *this;
   }
   
   
   int main()
   {
       Person p;
       Person me("Humberto Naves", 29);
       Person copy(p);
       Person q;
   
       q = me;
       return 0;
   }