chris@umcp-cs.UUCP (Chris Torek) (11/01/85)
In article <538@ttrdc.UUCP> levy@ttrdc.UUCP (Daniel R. Levy) writes: > The && operator doesn't GUARANTEE the chronological order of evaluation > is going to be left to right, No. && and || are guaranteed to evaluate the left hand side of the expression, and if the result is false or true (respectively) stop, otherwise evaluate the right hand side. (These are `McCarthy' or short-circuiting expressions.) This is why if (p == NULL || *p == 0) is guaranteed not to crash even on a machine where *(type *)NULL will. > if you have a screwball compiler (though it most probably will be). If you change that to `a broken compiler' I will agree. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 4251) UUCP: seismo!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@mimsy.umd.edu