error

[Pratima Nallapaneni]

Hi,
 I resolved all the earlier errors . But I am still
having once error. That is I am declaring

extern FILE *yyin;

after the include statements outside the main
somewhere.

When I use it in the main in the following way. It is
giving me errors.
if( ..)  
 yyin = fopen( argv[0], "r" );
else
 yyin = stdin;
Its giving me error saying :
undefined symbol: yyin

How do I resolve this. I am using 1.24 version of
Bison and I am running the program in UNIX.
Please help me

Thanks
pratima

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