computer science

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Show an example of why the following grammar is Ambiguous.

<program>           -> <stmts>

<stmts>               -> <stmts> ; <stmts> | <assignment>

<assignment>       -> <var> = <expr>

<var>                   -> a | b | c | d

<expr>                 -> <term> + <term> | <term> – <term>

<term>                 -> <var> | const