write small c-parser (Lex-Yacc)

[vikramNyamthi]

Hi all,

I am trying to learn Lex-Yacc and trying to write a small C-Parser that parses the line #include<stdio.h>.

For this i have written the grammer as

sentence : hash include openbrace stdio closed brace

The above grammer works fine if i give the input #include<stdio.h>
The problem is if i give only "#" as input i doesnt give any syntax error. But, if i enter the same "#" then it says syntax error. Can someone tell me why it is not giving the syntax error first time only ?!!!

thanks in advance
Vikram

[gpraghuram]

Hi,
R u reading the value from the stdin or from a file.?
R u using any lex file that is .i file for the .y file u have shown...?


Raghuram