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???
09/19/06 16:06
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 		 #124580 - Re: try this
Responding to: ???'s previous message
Yes, but in your program there is a declaration for 'j'.

Andy said, "If a symbol is undeclared, a C compiler will just assume that it's an extern int." That's the thing I don't understand. What he says is true for function names. But as far as I can tell, you get a compiler error (not a warning) if a variable name isn't declared.

-- Russ



List of 56 messages in thread
TopicAuthorDate
Variables within ISR            01/01/70 00:00      
   static            01/01/70 00:00      
      Static, link            01/01/70 00:00      
   beware            01/01/70 00:00      
      Modular Programming            01/01/70 00:00      
         a rebuttal            01/01/70 00:00      
            A Faq about...            01/01/70 00:00      
            Global variables            01/01/70 00:00      
               "Self Documenting"            01/01/70 00:00      
            Global Variables Compromise Modularity            01/01/70 00:00      
               Module vs Global scope            01/01/70 00:00      
               file static            01/01/70 00:00      
                  RE: file static            01/01/70 00:00      
                     extern does matter            01/01/70 00:00      
                  Undeclared Variables            01/01/70 00:00      
                     to Russ            01/01/70 00:00      
                     try this            01/01/70 00:00      
                        Re: try this            01/01/70 00:00      
               Not Evil            01/01/70 00:00      
               module variables            01/01/70 00:00      
                  yes and no all must be weighed            01/01/70 00:00      
         Hmm            01/01/70 00:00      
            the advantages of not suffering from interruptifob            01/01/70 00:00      
            That is the typical way            01/01/70 00:00      
               yes, absolutely            01/01/70 00:00      
                  Depends on the use            01/01/70 00:00      
                     every rule can (and should) be broken            01/01/70 00:00      
            Fixing Problems vs. Hiding Them            01/01/70 00:00      
               I agree, but many take this as an excuse            01/01/70 00:00      
                  Be Defensive            01/01/70 00:00      
   A Module Example            01/01/70 00:00      
      if we are to give examples            01/01/70 00:00      
         Poor example            01/01/70 00:00      
            not so poor            01/01/70 00:00      
         Reasons to Waste Machine Cycles            01/01/70 00:00      
            it is still 'hidden' and BTW why hide it            01/01/70 00:00      
               I'm Done Preaching            01/01/70 00:00      
                  I hope that as well            01/01/70 00:00      
         to asm programmers..            01/01/70 00:00      
            Poor Logic            01/01/70 00:00      
               what an utterly stupid teacher            01/01/70 00:00      
                  OO            01/01/70 00:00      
                     No            01/01/70 00:00      
                     What OOP tells you            01/01/70 00:00      
                        A long Time ago            01/01/70 00:00      
                  I disagree            01/01/70 00:00      
                     some of the worst 'spaghetti' I have seen            01/01/70 00:00      
               Rules in C            01/01/70 00:00      
                  rules imposed on C            01/01/70 00:00      
                     Language Problems            01/01/70 00:00      
            that is very relevant            01/01/70 00:00      
         what about the library?            01/01/70 00:00      
            OH NO            01/01/70 00:00      
               Experience is the best teacher            01/01/70 00:00      
                  overlay            01/01/70 00:00      
                  to Russell            01/01/70 00:00      

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