Is the const variable supported by yyin?

[Wang Yige]

Hi,

Recently,I have used bison to do somthing on Lexical Analyzer & Syntax 
Analyzer.

I checked the bison manual and found there only examples of yyin is ostream 
type and FILE * type, does the yyin support the variable type ? I 
recomplied the example of rpcalc in bison manual ,if I define a const 
variable with char * type in main(void) and want to make the yyparse() 
parse it correctly, what & how should I do ?

I am looking forward to your reply and appreciated for it!

Best Regards,
Wang Yige

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