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15.1.1 ISO C

The ISO C standard first appeared in 1989 (the standard is often called ANSI C). It added several new features to the C language, most notably function prototypes. This led to many years of portability issues when deciding whether to use ISO C features.

We think that programs written today can assume the presence of an ISO C compiler. Therefore, we will not discuss issues related to the differences between ISO C compilers and older compilers--often called K&R compilers, from the first book on C by Kernighan and Ritchie. You may see these differences handled in older programs.

There is a newer C standard called `C9X'. Because compilers that support it are not widely available as of this writing, this discussion does not cover it.


This document was generated by Gary V. Vaughan on May, 24 2001 using texi2html