QBasic Programming

CLS
INPUT "ENTER ANY NUMBER"; N
S = 0
WHILE N < > 0
R = N MOD 10
IF R MOD 2 = 1 THEN S = S + R
N = N \ 10
WEND
PRINT "SUM OF ODD DIGITS"; S
END
USING SUB PROCEDURE
DECLARE SUB SUMODD (N)
CLS
INPUT "ENTER ANY NUMBER"; N
CALL SUMODD (N)
END
SUB SUMODD (N)
S = 0
WHILE N < > 0
R = N MOD 10
IF R MOD 2 = 1 THEN S = S + R
N = N \ 10
WEND
PRINT "SUM OF ODD DIGITS"; S
END SUB
USING FUNCTION PROCEDURE
DECLARE FUNCTION SUMODD (N)
CLS
INPUT "ENTER ANY NUMBER"; N
SU = SUMODD (N)
PRINT "SUM OF ODD DIGITS"; SU
END
FUNCTION SUMODD (N)
S = 0
WHILE N < > 0
R = N MOD 10
IF R MOD 2 = 1 THEN S = S + R
N = N \ 10
WEND
SUMODD = S : END FUNCTION