Question

Long Answer 2: (Classes and Objects)

Design a class named Box. The class should have the following private members:

width - A double member variablethat holds the width of the box.

length – A double member variable for holding the length of the box.

height – A double member variable of type double that holds the height of the box.

In addition, provide the following member functions with full (inline) implementation.

a) A default constructor that sets all member variables to 0.

b) A constructor that accepts width, length and height and initializes the member variables appropriately.

c) A copy constructor

d) An appropriate set and get functions for width, length and height.

Answer 1

Answer: Hey dear student find the solution of your query if you have any doubt feel free to ask. Thanks!!

this C++ program has Box class and three private members. Default constructor parametrized constructor, copy constructor and setters, getters for all data members.

in main, call all member functions and all are working well as you can see the snapshot of the output.

If any query asks in the comment box.thanks.

C++ Code:

#include <iostream>
using namespace std;
class Box //class Box
{
private: //private data members
   double width;
   double length;
   double height;
public:
   Box()//default constructor
   {
       width = 0;
       height = 0;
       length = 0;
   }
   Box(double l,double w,double h)//parameterized constructor that initialized data members
   {
       length = l ;
       height = h;
       width = w;
   }
   Box(const Box &b2)//copy constructor
   {
       width = b2.width;
       height = b2.height;
       length = b2.length;
   }
   void setWidth(double w)//setters for all data members
   {
       width = w;//set width
      
   }
   void setHeight(double h)
   {
       height = h;//set height
   }
   void setLength(double l)
   {
       length = l;//set length
   }
   double getLength()//getters for all data members
   {
       return length;//return length
   }
   double getWidth()
   {
       return width;//return width
   }
   double getHeight()
   {
       return height;//return height
   }
};
int main()
{
Box b1(6.5,3.5,2.5);//object created with called parameterized constructor
Box b2 = b1;//call copy constructor
double l,w,h;//variables to store returning values
b2.setHeight(4.5);//call setters by object2
b2.setLength(7.5);
b2.setWidth(3.0);
l = b2.getLength();//call getters
w = b2.getWidth();
h = b2.getHeight();
cout<<" Box Created ";
cout<<endl;//print info about box
cout<<"Length: "<<l;
cout<<"\nWidth: "<<w;
cout<<"\nHeight: "<<h;
return 0;
}

  

Output:

W 62 1 b2.getLength(); 63 b2.getWidth(); 64 h b2.getHeight(); 65 cout<<" Box Created 66 cout<<endl; 67 cout<<"Length: "<<l; 68 cout<<"\nWidth: "<<w; Box Created <Length: 7.5 Width: 3 Height: 4.5 .. Program finished with exit code 0 Press ENTER to exit console. Ils