The message you are seeing is a warning. It arises only if you have look_through_file declared with a prototype; for example:

sub look_through_file($$)
{
   ...

[download]

There are three ways to deal with this:

  1. Move the definition of sub look_through_file to before the code where it is called (the while loop) — as recommended by daxim, above.
  2. Leave the definition where it is, but add a declaration before the calling code: 
    sub look_through_file($$);

    [download]
  3. Omit the prototype altogether. Unless you have a really good reason for including it, a prototype is usually a bad idea anyway.

See Prototypes. Hope that helps,

Athanasius <°(((>< contra mundum

In reply to Re: Calling a subroutine within a conditional by Athanasius
in thread Calling a subroutine within a conditional by Freezer

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