Hello Jasen

Replying to a message of Jasen Betts to JOHN GARDENIERS:

 JG>> There is one really humongous difference, which most people seem to
 JG>> have overlooked. A const uses no memory.

 JB> It does use memory, that's why you can make a pointer to it.

 JB>  const int nil=0;
 JB>  int *p=&nil;  /* works   */
 JB>  int *q=&0;    /* doesn't */

I thought that compilers were allowed to optimize a const into a literal.


Alan

"Computers do bite"

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