comma operator: keep away?

[Doug Gwyn]

In article <19913 at iuvax.cs.indiana.edu> bobmon at iuvax.cs.indiana.edu (RAMontante) writes:
>Is there a circumstance in which the comma operator is required, where
>the compound statement cannot be broken into multiple statements?

You've got to be kidding -- a comma expression is an expression,
whereas multiple statements are not an expression.  Thus the comma
operator is useful in contexts where semicolon-terminated statements
would not be.  Look at the definition of putc() in most implementations
of <stdio.h> for an example.