Question: Modify the lexical analyzer given in Section 4.2 to recognize the following list of reserved words and return their respective token codes: for (FOR_CODE, 30),

Modify the lexical analyzer given in Section 4.2 to recognize the following list of reserved words and return their respective token codes:

for (FOR_CODE, 30), if (IF_CODE, 31), else (ELSE_CODE, 32), while

(WHILE_CODE, 33), do (DO_CODE, 34), int (INT_CODE, 35), float

(FLOAT_CODE, 36), switch (SWITCH_CODE, 37).

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