Lecture 3

Learning objectives

After this class (which reviews C++ material that you should already know!), you should be able to:

1. Mention two benefits of data hiding.
2. Mention which type of file typically contains the interface, and which the implementation, in C++.
3. Give examples of some common errors with the use of pointers.
4. Given code with incorrect use of pointers, identify the problems and correct them.
5. Explain when "deep copy" is needed, why it is needed, and what are the typical features that need to be implemented to ensure deep copy.
6. Explain why self-assignment can lead to incorrect code, when we overload assignment to ensure deep copy.

Reading assignment

1. Chapter 1, sections 1.4-1.5.
2. Lecture: C++ review.
3. Review templates from COP 3330. Section 1.6 will help you with this material.

Exercises and review questions

• Exercises and review questions on current lecture's material
  1. What are two benefits of information hiding?
  2. Will the interface normally be in a .h file or in a .cpp file?
  3. Will the implementation normally be in a .h file or in a .cpp file?

• Questions on next lecture's material
  1. Write a template class called complex, which stores a complex number. The components may either be int, float, or double. Include an operator for adding two complex numbers, and for outputting a complex number. (Note: A complex number is a pair of numbers (x,y). The sum of complex numbers c₁ = (x₁, y₁) and c₂ = (x₂, y₂) is defined as the complex number (x₁+x₂, y₁+y₂).)
  2. Can you find out where the STL header files are, on the machine linprog?

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Last modified: 2 Sep 2011