Re: Conditional execution rules

[Hans Aberg]

At 02:32 +1000 2001/08/06, James Buchanan wrote:
>I have always tried to figure out how to make a type of conditional control
>statement.

I find it confusing to read your post, because it is not clear to me
exactly what you want:

The Bison manual section 5.2 has examples of how to do "if .. then ... else
..." statements. This includes how to handle to so called "dangling else",
which occurs if one also admits "if .. then ..." without the "else" part
(as in C/C++).

The C++ standard, which is called ISO+IEC+14882-1998 and can be bought from
ANSI for $18 (make sure to get the right one, as the one by ISO costs
$250), has a grammar in it. The part containing the "if" clause looks like:
  selection-statement:
    `if' ( condition ) statement
    `if' ( condition ) statement `else' statement
    `switch' ( condition ) statement
(or rather, it is typeset, so I had to put in `...' by hand).

I use to look into this C++ grammar in order to get ideas in constructing
my won Bison grammars.

  Hans Aberg