/* Copyright (c) <2009> * * This software is provided 'as-is', without any express or implied * warranty. In no event will the authors be held liable for any damages * arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely */ // if then else ambigues grammar %token sub sup c //%start S1 %right sub sup %% E : E sub E sup E {} | E sub E {} | E sup E {} | { E } {} | c {} ; %%