On Tue, Jun 21, 2016 at 05:47:59PM +0900, Simon Walter wrote:

[cut]

> >Be careful, because conditional expressions in C are subject to
> >"short-circuiting", meaning that only the minimum number of
> >expressions sufficient to determine the value of a chain of && and ||
> >will be evaluated. In particular, a chain of || expressions will be
> >evaluated until there is one that evaluates to TRUE (!=0), while a
> >chain of && is evaluated until there is one of them which evaluates to
> >false (==0).
> >
>
> Isn't that how AND and OR work in most programming languages? Mind you, I am
> not familiar with that many.

I didn't say that short-circuiting is a peculiarity of C :) I simply
said that short-circuiting is how C evaluates conditional
expressions. There are many cases (such as that of FORTRAN) in which
short-circuiting can be enabled or disabled at compile time, many
other cases (e.g. most of the dialects of BASIC and some other
esoteric languages) in which short-circuting does not exist, and many
more cases in which the language supports both eager and short-circuit
boolean operators (e.g., Java, Python, Perl, Ruby, etc.)

Boolean expressions in C are always subject to short-circuting.

HND

KatolaZ

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