20 Aug 96 04:27, Rowan Crowe wrote to Frank Adam:

 FA>> Does passing a pointer to a function effect performance, as opposed 
 FA>> to having the contents of said pointer global or local ?

 > Don't quite understand this one. Do you mean storing the return value 
 > in a global variable?

(I think) he means the difference between

  void myFunc(int *ptr)
  {
      /* do something with ptr */
  }

  int main(void)
  {
      int i;
      myFunc(&i);
      return 0;
  }

and

  int i;

  void myFunc(void)
  {
      /* do something with i */
  }

  int main(void)
  {
      myFunc();
      return 0;
  }

and

  void myFunc(void)
  {
      int i;
      /* do something with i */
  }

  int main(void)
  {
      myFunc();
      return 0;
  }

Regards
Andrew

-- randy{at}zws.com

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