right, but why can't I do this...

proc intTest(int $a, int $b)
{
int $c = $a + $b;
print ("value of c is: " + $c + "\n");
}

int $c = 4;
int $d = 5;
intTest($c,$d);

That should work as well, but it doesn't. I get the message varible $a is not defined.