Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

                       ◄Example►                 ◄Contents►  ◄Index►  ◄Back►
──────────────────────────────────────────────────────────────────────────────
'This example uses the MID$ function to extract digits from the binary
'number (input as a string) during the conversion of a binary number to a
'decimal number.
 
CLS    'Clear screen.
INPUT "Binary number = ", Binary$   'Input binary number as string.
Length = LEN(Binary$)               'Get length of string.
Decimal = 0
FOR K = 1 TO Length
   'Get individual digits from string, from left to right.
   Digit$ = MID$(Binary$, K, 1)
   'Test for valid binary digit.
   IF Digit$ = "0" OR Digit$ = "1" THEN
      'Convert digit characters to numbers.
      Decimal = 2 * Decimal + VAL(Digit$)
   ELSE
      PRINT "Error--invalid binary digit: "; Digit$
      EXIT FOR
   END IF
NEXT
PRINT "Decimal number =" Decimal
 
'Sample Output
'
'Binary number = 10110
'Decimal number = 22