Homework 3, A two dimensional array class.

Short Description:

Goals

• Designed the interface for a useful container.
• Implemented this container as a class.
• Tested the implementation of this container.
• Worked with dynamic memory.

Formal Description

You should design a useful interface for this class. As a minimum it should include:

• A constructor which takes two size_t parameters, the number of rows and columns for the constructed array.
• An overloaded [] operator. It should take two parameters, the row and column the user wishes to access and return a reference to the specified location. If either parameter is out of bounds, the function should return a reference to location 0 and print an error message. Please note, this feature requires a c++23 compiler. See this reference for way too much information. The function prototype is what you would expect.
• A means to retrieve each dimension of the array.
• Any other method required to make this a fully functional class involving dynamic memory.

You should begin by documenting the interface you wish to create. This can be in a text file or in a word document. If you choose a text file, place it in ReadMe.txt. The word document should be called ReadMe.docx. This should fully describe the interface and any conditions for use of the class. This document should also describe how you plan to test your code.

You should implement your code in Array2T.h and Array2T.cpp.

You should provide a working test driver to demonstrate that your class works (ie implement your test cases). In addition this should demonstrate how to use your class. If your test cases do not cover the entire interface, design more test cases.

Discussion

• For now, your class should hold integers.
• Is there a difference between a two dimensional array and a one dimensional array?
  • A[r,c] = A+(r*columns+c)*sizeof(element) is way too low level, but should give you an idea on how to access an element.
• You should have no memory leaks.
• You should support ALL required operations for a class with dynamic memory.
• You can do this with only one call to new per instance. You do not need row+1 calls, and an array of arrays is hard to maintain anyway.
• This homework is testing multiple items.
  • Design/test design 25%
  • Implementation 50%
  • Test Driver 25%
• You should take this seriously. You WILL use this class in future assignments. (Think game board, world map, ...)

Required Files

Submission