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The | The [[TAB]] function is used in [[PRINT]] and [[LPRINT]] statements to move to a specified column position. | ||
{{PageSyntax}} | {{PageSyntax}} | ||
: | :[[TAB]]({{Parameter|column%}}) | ||
| Line 12: | Line 12: | ||
* [[Comma]] PRINT spacing is up to 15 column places (IE: TAB(15)) to a maximum column of 57. | * [[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$]](13)) and linefeed([[CHR$]](10)) character are output when it moves to the next row. | * When printing to a file, a carriage return([[CHR$]](13)) and linefeed([[CHR$]](10)) character are output when it moves to the next row. | ||
* '''Note:''' QBasic did not allow a TAB to be [[concatenation|added]] to a string value. In [[PRINT]] statements the [[+|plus]] would be changed to a [[semicolon]]. | * '''Note:''' QBasic did not allow a TAB to be [[concatenation|added]] to a string value. In [[PRINT]] statements the [[+|plus]] would be changed to a [[semicolon]]. | ||
: In QB64, TAB [[concatenation]] is allowed instead of [[semicolon]]s. Example: {{ | : In QB64, TAB [[concatenation]] is allowed instead of [[semicolon]]s. Example: {{Text|PRINT "text" + TAB(9) + "here"|green}} | ||
''Example:'' Comparing TAB to [[comma]] print spacing which moves the next text print 15 columns. | ''Example:'' Comparing TAB to [[comma]] print spacing which moves the next text print 15 columns. | ||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|PRINT}} {{Cl|TAB}}(15); "T" 'TAB spacing | {{Cl|PRINT}} {{Cl|TAB}}(15); "T" 'TAB spacing | ||
{{Cl|PRINT}} , "T" 'comma spacing | {{Cl|PRINT}} , "T" 'comma spacing | ||
{{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{ | {{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{Text|;|red}} {{Cl|TAB}}(20); "A"; {{Cl|TAB}}(15); "B" 'semicolons add nothing to position | ||
{{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{ | {{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{Text|,|red}} {{Cl|TAB}}(20); "A"; {{Cl|TAB}}(15); "B" 'comma moves column position beyond 20 | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{OutputStart}} T | {{OutputStart}} T | ||
T | T | ||
T A | T A | ||
B | B | ||
T | T | ||
A | A | ||
B{{OutputEnd}} | B{{OutputEnd}} | ||
: ''Explanation:'' TAB moves the PRINT down to the next row when the current column position is more than the TAB position. | : ''Explanation:'' TAB moves the PRINT down to the next row when the current column position is more than the TAB position. | ||
Latest revision as of 22:54, 11 February 2023
The TAB function is used in PRINT and 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 CHR$(9) can be substituted for sequencial 9 space column moves.
- Comma PRINT spacing is up to 15 column places (IE: TAB(15)) to a maximum column of 57.
- When printing to a file, a carriage return(CHR$(13)) and linefeed(CHR$(10)) character are output when it moves to the next row.
- Note: QBasic did not allow a TAB to be added to a string value. In PRINT statements the plus would be changed to a semicolon.
- In QB64, TAB concatenation is allowed instead of semicolons. Example: PRINT "text" + TAB(9) + "here"
Example: Comparing TAB to comma print spacing which moves the next text print 15 columns.
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 |
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