Chapter 7.7, Problem 7.13CP

What will the following program code display on the screen?

class Tank

{

private:

int gallons;

public:

Tank()

{ gallons = 50; }

Tank(int gal)

{ gal Ions = gal ; }

int getGallons()

{ return gallons; }

};

int main()

{ Tank storage1, storage2, storage3(20);

cout << storage1.getGalIons() << endl;

cout << storage2.getGallons() << endl;

cout << storage3.getGallons() << endl;

return 0;

}