Question

Ambiguous grammar and unambiguous grammar

Answer 1

In computer science, an ambiguous grammar is a context-free grammarfor which there exists a string that can have more than one leftmost derivation or parse tree, while anunambiguous grammar is a context-free grammar for which every valid string has a unique leftmost derivation or parse tree.

Answer 2

In computer science, an ambiguous grammar is a context-free grammar for which there exists a string that can have more than one leftmost derivation or parse tree, while an unambiguous grammar is a context-free grammar for which every valid string has a unique leftmost derivation or parse tree