Converting Between Decimal, Octal, and Binary Numbers

• Microsoft Visual Basic for MS-DOS 1.0
• Microsoft Visual Basic for Windows, versions 1.0, 2.0, 3.0
• Microsoft BASIC Compiler, version 1.0
  on the following platforms: MACINTOSH
• Microsoft BASIC Interpreter for Apple Macintosh, versions 1.0, 1.01, 2.0, 2.1, 3.0
• Microsoft QuickBasic Compiler for the IBM PC, versions 1.0, 1.01, 1.02, 2.0, 2.01, 3.0, 4.0, 4.0b, 4.5
• Microsoft BASIC Compiler for MS-DOS, version 6.0
• Microsoft BASIC Compiler for MS-DOS and MS OS/2, versions 5.35, 5.36
• Microsoft Basic Professional Development System (PDS) for MS-DOS and MS OS/2, versions 7.0, 7.1
• Microsoft GW-Basic Interpreter, version 3.20

SUMMARY

The Microsoft Basic code below demonstrates how to perform the following conversions between decimal, octal, and binary numbers:

• Convert an octal number to a decimal (base 10) number



• Convert a decimal number to an octal (base 8) number



• Convert a decimal number to a binary (base 2) number

MORE INFORMATION

The following code example will perform the conversions:

' 1. Octal string to decimal Number:
INPUT "INPUT Octal number:"; octal$
PRINT VAL("&O" + octal$)

' 2. Decimal Number to octal string:
INPUT "INPUT Decimal number:"; Decimal
PRINT OCT$(Decimal)

' 3. Decimal Number to Binary string:
Bin$ = ""
INPUT "INPUT Decimal number:"; Decimal
FOR i = 14 TO 0 STEP -1           ' Positive numbers only
  pow2 = 2 ^ i
  IF Decimal >= pow2 THEN
     Decimal = Decimal - pow2: Bin$ = Bin$ + "1"
  ELSE Bin$ = Bin$ + "0"
  END IF
NEXT i
PRINT Bin$ 

• Microsoft Visual Basic version 1.0 for MS-DOS



• Microsoft Visual Basic versions 1.0, 2.0, 3.0 for Microsoft Windows. NOTE: You will need to replace the INPUT statement in the above code with a feature that is supported in this product, such as a text box used with a Click event procedure.



• Microsoft Basic Compiler version 1.0 for the Apple Macintosh



• Microsoft Basic Interpreter versions 1.0, 1.01, 2.0, 2.1, and 3.0 for the Apple Macintosh



• Microsoft QuickBasic Compiler versions 1.0, 1.01, 1.02, 2.0, 2.01, 3.0, 4.0, 4.0b, and 4.5 for the IBM PC



• Microsoft Basic Compiler versions 5.35 and 5.36 for MS-DOS



• Microsoft Basic Compiler version 6.0 for MS-DOS and MS OS/2



• Microsoft Basic PDS versions 7.0 and 7.1 for MS-DOS and MS OS/2



• Microsoft GW-Basic Interpreter version 3.2

Additional query words: VBmsdos QuickBas BasicCom 1.00 2.10 3.00 3.20 4.00 4.00b 4.50 6.00 6.00b 7.00 7.10

Keywords :
Version : MS-DOS:1.0; :1.0,1.01,1.02,2.0,2.01,2.1,3.0,3.20,4.0,4.0b,4.5,5.35,5.36,6.0,7.0,7.1
Platform : MS-DOS
Issue type :