exception handling in C

[D G Booth]

There was a paper about exception handling in C in Software Practice and
Experience back about 1981 (sorry, I dont have the exact reference on me).
That handled exceptions with code like:

exception FILE_ERROR;
...
BEGIN
   f = fopen("afile", "r");
   if (f == NULL) exc_raise(FILE_ERROR);
   ... normal case code.
EXCEPTION
   WHEN(FILE_ERROR)
       ... handle file error
   WHEN(OTHERS)
       ... handle other errors.
       exc_reraise();	/* Pass exception out to next level */
END

I have been using this code (with a few minor changes of my own)
for some time. It is neat and quite clean.

-- 
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The views expressed above are those of the author alone and may not
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-- 
---
Duncan Booth, RCP Ltd.                    Didcot, Oxon, UK
duncanb at ibmpcug.co.uk                     Bix: jrichards