Please help me with the below program.

-----------------------------------------------------------------------------------------------------------------------------------

#include

#include

using namespace std;

class Humanoid

{

public:

double height();

double weight();

protected:

double _speciesHeight;

double _speciesWeight;

};

double Humanoid::height()

{

return _speciesHeight;

}

double Humanoid::weight()

{

return _speciesWeight;

}

class Moclan : public Humanoid

{

public:

Moclan(double moclanHeight, double moclanWeight);

bool isEgg();

Moclan layEgg();

void hatch();

private:

bool _isEgg;

bool _theEgg;

};

Moclan::Moclan(double moclanHeight, double moclanWeight)

{

_speciesHeight = moclanHeight;

_speciesWeight = moclanWeight;

_isEgg = false;

_theEgg = false;

}

bool Moclan::isEgg()

{

return _isEgg;

}

Moclan Moclan::layEgg()

{

_theEgg = true;

_isEgg = true;

return *this;

}

void Moclan::hatch()

{

_isEgg = false;

}

int main() {

Moclan moclan(6.9, 320);

cout << "Moclan height: " << moclan.height() << endl;

cout << "Moclan weight: " << moclan.weight() << endl;

moclan.isEgg(); // should return false

cout << "moclan.isEgg(), (need false): " << moclan.isEgg() << endl;

Moclan moclanEgg = moclan.layEgg(); // call layEgg()

moclan.isEgg(); // should return false

cout << "moclan.isEgg(), (need false): " << moclan.isEgg() << endl;

moclanEgg.isEgg(); // should return true

cout << "moclanEgg.isEgg(), (need true): " << moclanEgg.isEgg() << endl;

moclanEgg.hatch(); // call hatch()

moclanEgg.isEgg(); // should return false

cout << "moclanEgg.isEgg(), (need false): " << moclanEgg.isEgg() << endl;

return 0;

}

----------------------------------------------------------------------------------------------------------------------------------

The output is:

Moclan height: 6.9

Moclan weight: 320

moclan.isEgg(), (need false): 0

moclan.isEgg(), (need false): 1 // Need a false;

moclanEgg.isEgg(), (need true): 1

moclanEgg.isEgg(), (need false): 0

The main part CAN'T be modified, so only the class and function declaration can be changed.

This is how it's supposed to flow:

After calling Moclan moclanEgg = moclan.layEgg(),

moclan.isEgg() should return false while moclanEgg.isEgg() should return true,

then calling moclanEgg.hatch(), that moclanEgg.isEgg() returns false again.

Thanks for your help!