Answer to Question #213895 in C++ for Anas

Question

Assuming there is no error in main() complete the class Rectangle and its functions.

int main()

{

     Rectangle rect1(3.4, 5.68);

     Rectangle rect2(2.4, 4.68);

     if (rect1-- != ++rect2) //increment/decrement will add & subtract by 1 of each data members of class

           cout << ”\n Both are not of same size”;

     else

           cout << ”\n Both are of same size”;

     rect1.show(); \\will display values 2.4, 4.68      

     Rectangle rect3 = rect1 + rect2;

     rect3.show(); \\will display values 5.8, 10.36

     system(“pause”);

     return 0;

}

Answer 1

class Base {

public:

int a;

virtual void func1() = 0;

// Constructor

Base(int i) {

a = i;

}

// Pure Virtual destructor

virtual ~Base() = 0;

};

// Pure virtual destructor is defined

Base :: ~Base() {

cout << "Pure virtual destructor is defined here" << endl;

}

class Derived : public Base {

int b;

public:

// Constructor of derived class

Derived(int x, int y) : Base(y) { b = x; }

// Destructor of derived class

~Derived() {

cout << "Derived class destructor" << endl;

}

//Definition for pure virtual function

void func1() {

cout << "The value of a is " << a << " and b is " << b << endl;

}

};

int main() {

Base *b = new Derived(5,10);

b->func1();

delete b;

}