6.What is the output of the following C++ program?

#include

#include

using namespace std;

class baseClass

{

public:

void print() const;

baseClass(string s = " ", int a = 0);

//Postcondition: str = s; x = a

protected:

int x;

private:

string str;

};

class derivedClass: public baseClass

{

public:

void print() const;

derivedClass(string s = "", int a = 0, int b = 0);

//Postcondition: str = s; x = a; y = b

private:

int y;

};

int main()

{

baseClass baseObject("This is base class", 2);

derivedClass derivedObject("DDDDDD", 3, 7);

baseObject.print();

derivedObject.print();

return 0;

}

void baseClass::print() const

{

cout << x << " " << str << endl;

}

baseClass::baseClass(string s, int a)

{

str = s;

x = a;

}

void derivedClass::print() const

{

cout << "Derived class: " << y << endl;

baseClass::print();

}

derivedClass::derivedClass(string s, int a, int b)

:baseClass("Hello Base", a + b)

{

y = b;

}