Question

I want to make some variables I generate in b available in c:

a   :   b c { ...some code...} 

A simple example:

b :  X  { int result = 0; }    |  Y  { int result = 1; } 

so I can, later on in c say:

c : D   { printf(result + 1); }   | E   { printf(result + 2);  } 

Is there any chance to do that? Any help would really be appreciated!

Answer 1

result should be a global variable. You can do this by including

%{     int result; %} 

at the top of your YACC file. Of course, you should also replace int result = 0 and int result = 1 with result = 0 and result = 1 respectively.