1. CGS 3460 Course Web Site –Get CISE Account –Submit via Web Ct –Late Policy –50% Per Day –Missubmission policy –Academic Honesty –Class Scheduling

2. Student Breakdown

3. 1. INTRODUCING C

4. History of C Designed and implemented by Dennis Ritchie of Bell Labs between 1969 and 1973. Created to serve as the implementation language for the UNIX operating system. Named after the B language, its immediate predecessor (which in turn was named after the BCPL language). Became popular during the 1980s, both for UNIX programming and for developing applications for personal computers. Dennis Ritchie’s article, “The Development of the C Language,” can be found on the web at cm.bell-labs.com/cm/cs/who/dmr/chist.html.

5. Versions of C K&R C Described in Kernighan and Ritchie, The C Programming Language, Prentice-Hall, 1978 ANSI C (ISO C, C89) ANSI standard X3.159-1989 (completed in 1988; formally approved in December 1989) International standard ISO/IEC 9899:1990 Described in Kernighan and Ritchie, The C Programming Language, Second Edition, Prentice-Hall, 1988 C99 International standard ISO/IEC 9899:1999

6. Advantages of C Advantages –Efficient –Portable –Powerful –Flexible –Standard library –Integrated well with UNIX

7. Disadvantages of C Disadvantages –Error-prone –Difficult to understand –Difficult to maintain

8. Recommendations –Use tools (debuggers, etc.) to make programs more reliable. –Use libraries of existing code (both to save time and increase reliability). –Adopt a sensible set of coding conventions. –Avoid “tricks” and complicated code.

9. Demonstration Compiling Submitting