Consider the definition of the following class: class testClass { public: int sum();...

Consider the definition of the following class:

class testClass

{

public:

int sum();

//Returns the sum of the private member variables

void print() const;

//Prints the values of the private member variables

testClass();

//Default constructor

//Initializes the private member variables to 0

testClass(int a, int b);

//Constructors with parameters

//initializes the private member variables to the values

//specified by the parameters

//Postcondition: x = a; y = b;

private:

int x;

int y;

};

a. Write the definitions of the member functions as described in the definition of the class testClass.

b. Write a test program to test the various operations of the class testClass.