3. Consider the following statements:

class yClass

{

public:

void one();

void two(int, int);

yClass();

private:

int a;

int b;

};

class xClass: public yClass

{

public:

void one();

xClass();

private:

int z;

};

yClass y;

xClass x;

a. The private members of yClass are public members of xClass. True or False?

b. Mark the following statements as valid or invalid. If a statement is invalid, explain why.

i. void yClass::one()

{

cout << a + b << endl;

}

ii. y.a = 15;

x.b = 30;

iii. void xClass::one()

{

a = 10;

b = 15;

z = 30;

cout << a + b + z << endl;

}

iv. cout << y.a << " " << y.b << " " << x.z << endl;