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 the base class", 2);
derivedClass derivedObject("", 3, 7);

baseObject. print();
derivedObject. print();

system("pause");

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;
}