CPSC 427a: Object-Oriented Programming

Michael J. Fischer

Lecture 2
September 7, 2010

C++ Overview

General properties of C++

• Widely used in the real world
• Close to the machine
• Gives programmer fine control over use of resouces
• Supports object-oriented programming paradigm
• Supports modularity and component isolation
• Supports reusabale code through derivation and templates

C/C++ comparison]Comparison of C and C++

C++ Extends C

• C++ grew out of C.
• Goals were to improve support for modularity, portability, and code reusability.
• Most C programs will compile and run under C++.
• C++ replaces several problematic C constructs with safer versions.
• Although most old C constructs will still work in C++, they should not be used in new code where better alternatives exist.
  
  Example: Use Boolean constants true and false instead of 1 and 0.

Some Extensions in C++

• Comments // (now in C99)
• Executable declarations (now in C99)
• Type bool
• Enumerated types
• Reference parameters
• Definable type conversions
• Operator extensions
• Generic/overloaded functions
• Name hiding
• Classes

Tools

Low-level

• A text editor such as emacs or vi.
• The compiler suite: g++.
• Project management: make

Eclipse IDE (integrated development environment)

• Integrates various low-level tools
• Open source
• Works on many platforms
• Facilitates development cycle

Generic Insertion Sort

Two implementations of simple insertion sort:

1. C version: Written in object-oriented style to the extent possible in C.
2. C++ version: Similar code but with C++ support

C version

See code demo.