TO CHECK THE CHARACTER IS CAPITAL OR SMALL

DECLARE FUNCTION CHTR$(A$)

CLS

INPUT"ENTER ANY CHARACTER";A$

PRINT CHTR$(C$)

END

FUNCTION CHTR$(A$)

D$=LEFT$(A$)

A=ASC(D$)

IF A>=65 AND A<=90 THEN

CHTR$="LETTER IS IN UPPER CASE"

ELSE IF A>=48 AND A<=57 THEN

CHTR$="LETTER IS IN LOWER CASE"

ELSE 

CHTR$="NOT A CHARACTER"

END IF

END FUNCTION