Construct an attribute grammar that uses only one attribute

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Reference no: EM133369877

Case: Scienti?c notation is expressing a number as m X 10", where m, the mantissa, is a decimal number and n, the exponent, is an integer. Scienti?c e notation is the same thing written in a single line as me n. We will assume, for simplicity, that the mantissa must have digits before and after the decimal point and that the exponent must have at least one digit. Examples: 40.5e3, 8.0e0, -23 . 11e20, +0 . 234e-9.

(a) Construct an attribute grammar that uses only one attribute, ml; the value of ml for the root will store the value corresponding to the number represented by the scienti?c e notation given by the yield of the tree.

(b) Draw an annotated parse tree for the string -12.345e-10. Show the attribute ?ow (arrows and values).

Reference no: EM133369877

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