Thread: extern var

  1. #1
    Registered User
    Join Date
    Sep 2010

    Lightbulb extern var

    why don't we use all variables as external variables in c?

  2. #2
    Make Fortran great again Epy's Avatar
    Join Date
    Sep 2009
    California, USA
    Why would you want to? The extern keyword means the variable is defined in another file.

    Do you really mean to ask why don't we make all variables global?

  3. #3
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    > why don't we use all variables as external variables in c?
    Create a single global variable called 'i' and use if for ALL your loops.

    Then report back.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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