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Home > Forums > Programmers > Languages > Perl Forum

annoying for loop error(2)

Read More Threads Like This One

fortytwo (TechnicalUser)

31 Aug 00 11:22

Hi, I have this for loop and it is looping three times:

for ($i = 0, $i <= $noinsection, $i++)
  {
  print $i;
  }

even though $noinsection is 1.  $i prints as 1 each time.

Anyone got any ideas?

fortytwo
will@hellacool.co.uk
my test site

rbobbitt (Programmer)

31 Aug 00 20:58

You're using commas where you should be using semicolons. Try this instead:

for ($i = 0; $i <= $noinsection; $i++)
{
print $i;
}

Regards

fortytwo (TechnicalUser)

1 Sep 00 4:33

Hi, Thanks for that. I guess because I didn't get an internal server error I thought the error lay elsewhere.

One thing, how did the first code section only run three times then exit?

fortytwo
will@hellacool.co.uk
my test site

sesth (Programmer)

1 Sep 00 11:31

I think perl uses your for-head as a list. The list ($i = 0, $i <= $noinsection, $i++) has three elements and is evaluated before entering the loop. $i is set to 0 and incremented at last resulting to 1. The loop iterates 3 times because the list has 3 elements. The current value of $i (1) is printed.

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