On Aug 3, 2011, at 8:27 PM, Graham Cox wrote: > > On 04/08/2011, at 11:19 AM, Greg Parker wrote: > >>> This is a classic question for coding job interviews. >> >> Incorrect. > > > Ah well, I guess I didn't get the job :) > > In my defence, I saw this in a job interview but it was prior to 1999. Maybe > C99 tightened up on something that was previously vague. > > --G. >
My copy of K&R © 1978 says: "More interesting are the logical connectives && and ||. Expressions connected by && or || are evaluated left to right, and evaluation stops as soon as the truth or falsehood of the result is known. These properties are critical to writing programs that work." (p 38) and later in Appendix A: C Reference Manual: "Unlike &, && guarantees left-to-right evaluations; moreover the second operand is not evaluated if the first operand is 0" (p190, section 7.11 Logical AND operator) "Unlike |, || guarantees left-to-right evaluations; moreover the second operand is not evaluated if the first operand is non-zero" (p191, section 7.12 Logical OR operator) Nothing vague there. More likely the somebody that interviewed you didn't have it correct in the first place, scarring you for life... Glenn Andreas gandr...@gandreas.com The most merciful thing in the world ... is the inability of the human mind to correlate all its contents - HPL _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
