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> One technical question : when one write "if (c1 && c2 && c3)", are tests
> c2 and c3 still evaluated when c1 is "false"?
>
no, not in c (and c++). It's called short-cirtuited evaluation and it
allows you to write things like:
int* a=NULL;
/* do something */
if (a && (*a)<10) { /* *a is a number */}
else{ /* a is NULL */ }
Otherwise if a were still NULL, you would get segfault at the
dereference *a.
(Pascal doesn't have that, for instance, unless specifically requsted.)
Vaclav
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