Using the "output" from yacc

[Alex Ryu]

Hello
I have a series of large arrays of floating point data.  "Attached" to each
array is a smaller array of integers, call it c.   What I would like to do
is perform operations on c of this nature:
if c[1] < 54 and c[13] != 7 then c[3] = 16, etc.  These instructions will be
contained in a char buffer, which I think I can use as the input to lex.
After the operations are made, then I just want to output/write to disk the
arrays.  Is this possible using lex and bison?  It seems like it should be,
but I can't quite find a way.  How do I make yyparse() "see" the arrays?
Would I have to directly modify the output of bison?  Thanks for any help
you can provide.
Outline:
Say c = {1,3,5,9,-8}, and instructs = "if c[1] < 54 and c[0] != 7 then c[3]
= 16"  Then I would want yyparse() to change c to {1,3,5,16,-8}.  Remember
that we have a lot of "c's", so I suppose one would make the substitution 1
for c[0], etc, before passing to yylex().