QBASIc to check Armstrong or not

CLS
INPUT 'Enter any number'; N
A = N
S = 0
WHILE N <> 0
R = N MOD 10
S = S+R^3
N = N\10
WEND
IF A=S THEN
PRINT "The number is armstrong"
ELSE
PRINT "The number is not armstrong"
END IF
END