The steps are as follows:

    1.  Design a class name Box. 

2. Box class will have three private member variable: length, height and width. 3. Create a parameterized constructor for the Box class to initialized length, height and width. 4. Box class will have two member function: float area(), float volume(). And the functions will return area and volume of the box. 5. In main function create an array of Box object. The size of the array will be 20. 6. Use C++ library function rand() to generate the value of length, height and width of every box. Value of length, height and width must be greater than 0. 7. Now, find the largest and smallest box from the array.

Please help me to do this assignment .