PROGRAMMING IN C++ WEEK 3

HELLO!! FRIENDS HERE I HAVE PASTED ONLY THE SOLUTION AND NOT THE COMPLETE PROGRAM SO PASTE IT CAREFULLY IN YOUR SOLUTION.

QUESTION 1:

mutable int bill;                  // LINE-1

public:

    Customer(int _cust_id, string _name, int _bill)

        : cust_id(_cust_id), name(_name), bill(_bill) {}

    void changeBill(int s)const {    // LINE-2

        bill = s;

    }

    void display()const {            // LINE-3 

QUESTION 2:

public:

Point(int _x, int _y) : x(_x), y(_y){} 

// Copy constructor 

Point( const Point& p2 ) : x( p2.x*10 ), y( p2.y*10 ){} 

QUESTION 3:

class Point {

    mutable int x;    // LINE-1

    mutable int y;    // LINE-2

public:

    Point(int _x, int _y) : x(_x), y(_y){}

    void changePoint(int _x, int _y)const {    // LINE-3

        x = _x;

        y = _y;

    }

    void showPoint()const {    // LINE-4

QUESTION 4:

// LINE-1: define parametrized constructor 

Rectangle::Rectangle(int _h, int _w)

{

  hp=&_h;

  wp=&_w;

}

// LINE-2: define destructor

Rectangle::~Rectangle()

{

  

}

// LINE-3 define function area()

int Rectangle::area()

{

  int a;

  a=(*hp)*(*wp);

  return a;

}