Hi Bill.

22-Apr-04 01:28:01, Bill Birrell wrote to Jasen Betts


  >> Its worse than that, the body of the loop gets a different range
  >> of s values of s too.

 BB> No, Jasen that would only be true of pre-increment which you and
 BB> Darin habitually use. I habitually use post-increment largely
 BB> because I do not habitually use C++

 BB> The while (while(*s++){};) loop evaluates *s, and only if not zero
 BB> increments s - that's what post-increment means.
                                                       ^^^^^^^^^^^^^^^^
no.

the while loop evaluates s++  which is non zero if *s was non zero at the
start of the evaluation, evaluating *s++ always increments s

 BB> On the next iterations it looks at it again until *s=='\0'. Then it
 BB> terminates

 BB> It would make a difference only if the part in braces referenced
 BB> or altered s or *s. It doesn't

In that example it doesn't the original claim had unspecified contents.

 JB>>>>>>>>> for( s=target ; *s ; s++ ) {

 BB>>>>>>> char *s=target; while(*s++) {...};

 -=> Bye <=-

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