Subject: mp1 clarification

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A perceptive student asks:

> I just had a quick question about assnignment 2. What does the
> int that the child processes are returning represent?

Since the child processes are supposed to exit() when
they complete their work, this is indeed  a "bug" in
the specification. (I got into this bad habit years ago
because functions declared to return int may be referenced
before they are defined without generating a compiler
error).

Anyhow feel free to convert the child functions to
void child1(  ... ) etc.

Or just use the somewhat oddball construct:

int child1(
int in,
int out)
{

   :

   exit(0);
   return(0) // !?
}

to get rid of warnings that a function declared to return int
is not doing so.