On Fri, 5 Mar 1999 [EMAIL PROTECTED] wrote:
# I've seen a lot of source code lately. My idea the best way to learn a
# language ...
#
# I've noticed that exit() can take a parameter. I've seen exit(0), exit(1),
# exit(2) and even exit(10). What does the parameter mean ? I can't find any
# table with its possible values ...
the number is known as an exit status and is returned to the parent of that
process (which if you run the program from a shell then the exit status is
returned to the shell).
there are no specific numbers, you can put whatever you like there. There
are a few conventions however...
0 - Normal termination
1 - abnormal termination (something bad happened and you had some sort of
error routine that called exit(1))
e.g
int main ()
{
int fd;
if (!fd = open (.......))
{
perror ("open");
exit (1);
}
... rest of normal code ...
exit (0);
}
--
+++ Beware of programmers who carry screwdrivers +++
[EMAIL PROTECTED] http://www.users.globalnet.co.uk/~kermit
