Formal Languages Questions Medium
An ambiguous grammar is a type of formal grammar in which there exists at least one string that can be derived by more than one parse tree. In other words, it is a grammar that allows multiple interpretations or meanings for a given input string. This ambiguity arises when there are multiple production rules or paths that can be followed to derive the same string. As a result, it becomes difficult to determine the correct interpretation or meaning of the input string. Ambiguous grammars can lead to confusion and difficulties in parsing and understanding the language defined by the grammar. Therefore, it is generally desirable to avoid or eliminate ambiguity in formal languages by using unambiguous grammars.