Question: 4. Make the lexical analyzer for the grammar below: LETTER :: = a..z | A..Z DIGIT :: = 0..9 ID :: = LITER (LITER |

4. Make the lexical analyzer for the grammar below:

LETTER :: = a..z | A..Z

DIGIT :: = 0..9

ID :: = LITER (LITER | DIGIT) *

REAL :: = DIGIT + [. DIGIT +]

Please I need the source code

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