C Primer Plus, Fourth Edition

Chapter 16. The C Preprocessor and the C Library

You will learn about the following in this chapter:

• More capabilities of the C preprocessor

• Function-like macros and conditional compilation

• Inline functions

• The C library in general and some of its handy functions in particular

• Preprocessor Directives:

  #define, #include, #ifdef

  #else, #endif, #ifndef

  #if, #elif, #line, #error, #pragma

• Functions:

  sqrt(), atan(), atan2()

  exit(), atexit()

  assert()

  memcpy(), memmove()

  va_start(), va_arg(), va_copy(), va_end()

The C language proper is built on the C keywords, expressions, statements and the rules for using them. The ANSI C standard, however, goes beyond describing just the C language. It also describes how the C preprocessor should perform, establishes which functions ...