Question: formal language a practical introduction Chapter 12 exercises EXERCISE 4 ow that each of the following BNF grammars is ambiguous. (To show that a grammar

formal language a practical introduction

Chapter 12 exercises

EXERCISE 4 ow that each of the following BNF grammars is ambiguous. (To show that a grammar is ambiguous, you must demonstrate that it can generate two parse trees for the same string.) a. This grammar for expressions: I ( ::- womans: wilma | bettyl : fred | barney |

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