I would agree that the comma operator can produce absurd, nutty code like:

while (expr1, expr2, expr3, expr4, expr5, expr6, expr7)

The ONLY time I use the comma operator is in the following way:

while ((print prompt), test-response-to-prompt)

How is this "opaque"?

My code prepends a single print statement in the "while", a very simple thing who's return value is ignored. Without the comma operator, I would have to prompt before the loop and then prompt before the next loop. This can lead to many prompt statements or calls to a prompt subroutine for each error condition instead of just "next;".

The print statement at the beginning has no effect upon the test-response-to-prompt code. Use of the comma operator avoids 2 or more other statements.

I avoid while(1) except in the case of servers. Those loops never exit. I consider your while(1) with multiple returns within the FOREVER statement (a typical #define for while (1)or for (;;)) to be confusing. You have to read the code to figure out what the "end of loop" condition really is.

I argue that it is better to put the "end of loop" condition in the "while" or "for" loop, right at the top rather than "burying it" within a FOREVER loop.

In reply to Re^3: Use of uninitialized value in addition by Marshall
in thread Use of uninitialized value in addition by Solarplight

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