Hey Monks,
I would like to write a subroutine to look for command-line arguments such as -help, -h, and --help. I wanna call my subrutine from a main program and the thing is: if I give the program any of the named command-line arguments, when you
pass them into the subroutine it should return a true value. If this is the case, the program should print out a help message in a $USAGE variable and exit.
My try is:
#!/usr/bin/perl -w
$check = mycheck($#ARGV);
if ($check != 1) {
$usage = "Help arguments have been found";
print $usage, "\n";
}
sub mycheck {
my($#ARGV) = @_;
$return = 0; #Variable RETURN set as false (set as 0)
foreach $arg (0 .. $#ARGV) {
if (($arg eq '-help') || ($arg eq '-h') || ($arg eq '--help'))
+ {
$return = 1; #Variable return now is true
exit;
} else {
print "No help arguments found\n";
}
}
return $return
}
But it looks like not working and I cannot find the reason. Any ideas? when I run it it returns "syntax error at ex4HW01.pl line 13, near "0;"
THANKS!
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