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82 lines
2.5 KiB
Markdown
82 lines
2.5 KiB
Markdown
The [HEX$](HEX$) function returns the base 16 hexadecimal 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$ = [HEX$](HEX$)(decimalNumber)
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## Parameter(s)
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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 function returns the string hexadecimal (base-16) representation of decimalNumber.
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* The function does not return a leading sign space so [LTRIM$](LTRIM$) is not necessary.
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* [VAL](VAL) can convert the string value back to a decimal value by prefixing the string return with "&H": `dec = VAL("&H" + hexvar$)`.
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## Example(s)
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Comparing decimal, hexadecimal and octal string values 0 to 15.
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```vb
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LOCATE 2, 20: PRINT " Decimal | Hexadecimal | Octal "
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LOCATE 3, 20: PRINT "-----------+-------------+--------"
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template$ = " \ \ | \\ | \\ "
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FOR n% = 0 TO 15
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LOCATE 4 + n%, 20: PRINT USING template$; STR$(n%); HEX$(n%); OCT$(n%)
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NEXT n%
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```
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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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*Note:* Decimal [STR$](STR$) values contain a leading sign space so values require an extra space in the template using the slash format.
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Converting hex value to decimal.
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```vb
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h$ = HEX$(255)
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PRINT "Hex: "; h$
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PRINT "Converting Hex value to Decimal:"; VAL("&H" + h$)
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```
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```text
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Hex: FF
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Converting Hex value to Decimal: 255
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```
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## See Also
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* [OCT$](OCT$), [STR$](STR$), [VAL](VAL)
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* [&H](&H) (hexadecimal), [&O](&O) (octal), [&B](&B) (binary)
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* [Base Comparisons](Base-Comparisons)
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* [HEX$ 32 Bit Values](HEX$-32-Bit-Values)
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