Question

1. Circle or mark in some way the member functions that should be constant qualified.

class intArray {

friend ostream& operator<<(ostream& outStream, intArray& rhs);

public:

    intArray();

    intArray(const intArray&);

    ~intArray();

    void Print();

    int Size();

    int operator[](int);

    intArray operator=(intArray &);

    intArray operator+(intArray);

bool operator==(intArray);

private:

    int size;

    int *data;

};

Answer 1

//const member function- which ensures that values of data members of class cant be modified
class intArray {

friend ostream& operator<<(ostream& outStream, intArray& rhs);

public:

    intArray(); //cant be declared as const since it initializes values of data members of class

    intArray(const intArray&);//cant be declared as const since it copies data from one object to another object

    ~intArray();

    void Print();//can be declared as const since it only displays the data for object but doesn't modify it

    int Size(); //can be declared as const since it only returns the size

    int operator[](int);//can be declared as const since it only returns the value at particular position

    intArray operator=(intArray &);//cant be declared as const since it copies data from one object to another object

    intArray operator+(intArray);////cant be declared as const since it adds the objects

bool operator==(intArray);//can be declared as const since only comparison of objects is done

private:

    int size;

    int *data;

};
The following member functions can be const qualified

void Print() const
int Size() const
int operator[](int) const
bool operator==(intArray) const