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83 lines
2.4 KiB
Markdown
83 lines
2.4 KiB
Markdown
The [OCT$](OCT$) function returns the base-8 octal representation of an [INTEGER](INTEGER), [LONG](LONG) or [_INTEGER64](_INTEGER64) value as a [STRING](STRING).
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## Syntax
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> result$ = [OCT$](OCT$)(number)
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## Parameters
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* number can be any [INTEGER](INTEGER), [LONG](LONG) or [_INTEGER64](_INTEGER64) value, positive or negative.
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* number can also be any [SINGLE](SINGLE), [DOUBLE](DOUBLE) or [_FLOAT](_FLOAT) value, but only the integer part of the value is converted in that case. That is, from the value *-123.45* the function would convert the *-123* only.
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## Description
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* The [OCT$](OCT$) function returns the octal (base-8) representation of number.
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* number can be any integer value.
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* No leading space is returned.
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* [VAL](VAL) can convert octal string values to decimal when the "&O" prefix is added.
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## Example(s)
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Outputs all of the decimal, hexadecimal and octal digits:
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```vb
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LOCATE 2, 20: PRINT " Decimal | Hexadecimal | Octal "
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LOCATE 3, 20: PRINT "---------+-------------+-------"
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template$ = " ## | \\ | ## "
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FOR n% = 0 TO 15
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LOCATE 4 + n%, 20: PRINT USING template$; n%; HEX$(n%); VAL(OCT$(n%))
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NEXT n%
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```
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> *Note:* The actual octal value is converted by [VAL](VAL) directly back to a numerical value by **not using** the "&H" prefix.
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```text
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Decimal | Hexadecimal | Octal
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---------+-------------+-------
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0 | 0 | 0
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1 | 1 | 1
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2 | 2 | 2
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3 | 3 | 3
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4 | 4 | 4
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5 | 5 | 5
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6 | 6 | 6
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7 | 7 | 7
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8 | 8 | 10
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9 | 9 | 11
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10 | A | 12
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11 | B | 13
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12 | C | 14
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13 | D | 15
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14 | E | 16
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15 | F | 17
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```
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Example 2: Converting a octal value to decimal.
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```vb
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octvalue$ = OCT$(255)
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PRINT "Oct: "; octvalue$
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PRINT "Converting Oct value to Decimal:"; VAL("&O" + octvalue$)
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```
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```text
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Oct: 377
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Converting Oct value to Decimal: 255
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```
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## See Also
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* [HEX$](HEX$), [VAL](VAL)
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* [&H](&H) (hexadecimal), [&O](&O) (octal), [&B](&B) (binary)
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* [Base Comparisons](Base-Comparisons)
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