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Consider the following context-free grammar.
Consider the following context-free grammar.
This is a natural-looking grammar for part of a programming language, but unfortunately, the grammar is "ambiguous" in the sense that it can be parsed in different ways (that have distinct meanings).
(a) Show an example of a string in the language that has two different parse trees that are meaningfully different (i.e., they represent programs that would behave differently when executed).
(b) Give two different grammars for this language that are both unambiguous but produce different parse trees from each other.
