Question

• Define a BNF grammar for expressions consisting of +, , and (exponential). The operator has precedence over , and * has precedence over +. Both + and * are left-associative while ** is right- associative. • Using the above grammar, draw a parse tree for the sentence: 7 + 6 + 5 * 4 * 3 2 1

          • Define a BNF grammar for expressions consisting of +, *, and **
(exponential). The operator ** has precedence over *, and * has
precedence over +. Both + and * are left-associative while ** is right-
associative.
• Using the above grammar, draw a parse tree for the
sentence: 7 + 6 + 5 * 4 * 3 ** 2 ** 1

• Define a BNF grammar for expressions consisting of +, *, and **
(exponential). The operator ** has precedence over *, and * has
precedence over +. Both + and * are left-associative while ** is right-
associative.
• Using the above grammar, draw a parse tree for the
sentence: 7 + 6 + 5 * 4 * 3 ** 2 ** 1

Added by Shirley S.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

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Solved by Expert Keondre Parker

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Define a BNF grammar for expressions consisting of ^ (exponential). The operator ^ has precedence over * and * has precedence over +. Both + and * are left-associative while ^ is right associative. Using the above grammar, draw a parse tree for the sentence: 7 + 6 + 5 * 4 * 3 ^ 2 ^ 1.