mirror of
https://github.com/QB64Official/qb64.git
synced 2024-07-16 17:45:20 +00:00
53 lines
1.8 KiB
Markdown
53 lines
1.8 KiB
Markdown
The TAB function is used in [PRINT](PRINT) and [LPRINT](LPRINT) statements to move to a specified column position.
|
|
|
|
## Syntax
|
|
|
|
> TAB(column%)
|
|
|
|
## Description
|
|
|
|
* Space characters are printed until the print cursor reaches the designated column%, overwriting existing characters.
|
|
* If a subsequent TAB *column%* is less than the current position, TAB moves the next print to that column on the next row.
|
|
* [ASCII](ASCII) [CHR$](CHR$)(9) can be substituted for sequencial 9 space column moves.
|
|
* [Comma](Comma) PRINT spacing is up to 15 column places (IE: TAB(15)) to a maximum column of 57.
|
|
* When printing to a file, a carriage return([CHR$](CHR$)(13)) and linefeed([CHR$](CHR$)(10)) character are output when it moves to the next row.
|
|
* **Note:** QBasic did not allow a TAB to be [concatenation](concatenation) to a string value. In [PRINT](PRINT) statements the [+](+) would be changed to a [semicolon](semicolon).
|
|
> In QB64, TAB [concatenation](concatenation) is allowed instead of [semicolon](semicolon)s. Example: PRINT "text" + TAB(9) + "here"
|
|
|
|
## Example(s)
|
|
|
|
Comparing TAB to [comma](comma) print spacing which moves the next text print 15 columns.
|
|
|
|
```vb
|
|
|
|
PRINT TAB(15); "T" 'TAB spacing
|
|
|
|
PRINT , "T" 'comma spacing
|
|
|
|
PRINT TAB(15); "T"; TAB(20); "A"; TAB(15); "B" 'semicolons add nothing to position
|
|
|
|
PRINT TAB(15); "T", TAB(20); "A"; TAB(15); "B" 'comma moves column position beyond 20
|
|
|
|
```
|
|
|
|
```text
|
|
|
|
T
|
|
T
|
|
T A
|
|
B
|
|
T
|
|
A
|
|
B
|
|
|
|
```
|
|
|
|
> *Explanation:* TAB moves the PRINT down to the next row when the current column position is more than the TAB position.
|
|
|
|
## See Also
|
|
|
|
* [PRINT](PRINT), [LPRINT](LPRINT)
|
|
* [SPC](SPC), [SPACE$](SPACE$)
|
|
* [STRING$](STRING$)
|
|
* [CHR$](CHR$), [ASCII](ASCII)
|