Program to find reverse of input string using SUB

DECLARE SUB REV(N$)
CLS
INPUT"ENTER ANY WORD";N$
CALL REV(N$)
END

SUB REV(N$)
FOR I= LEN(N$) TO 1 STEP -1
B$=MID$(N$,I,1)
C$=C$+B$
NEXT I
PRINT"The reversed word=";C$
END SUB

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