C/the.ansi.c.programming.language/notes.accompany.ansi.c/sx7e.html

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   9 <title>section 4.5: Header Files</title>
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  15 <H2>section 4.5: Header Files</H2>
  16
  17 page 82
  18 <p>By the way, the ``<TT>.h</TT>'' traditionally used in header file names
  19 simply stands for ``header.''
  20 </p><p>We can imagine several strategies for using header files.
  21 At one extreme would be to use zero header files,
  22 and to repeat declarations in each file which needed them.
  23 This would clearly be a poor strategy,
  24 because whenever a declaration changed,
  25 we would have to remember to change it in several places,
  26 and it would be easy to miss one of them,
  27 leading to stubborn bugs.
  28 At the other extreme would be to use one header file for each source file
  29 (declaring just the things defined in that source file,
  30 to be <TT>#include</TT>d by files using those things),
  31 but such a proliferation of header files would usually be unwieldy.
  32 For small projects
  33 (such as the calculator example),
  34 it's a reasonable strategy
  35 to use one header file for the entire project.
  36 For larger projects,
  37 you'll usually have several header files for sets of related declarations.
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