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47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
The {{KW|TAB}} function is used in [[PRINT]] and [[LPRINT]] statements to move to a specified column position.
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{{PageSyntax}}
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:{{KW|TAB}}({{Parameter|column%}})
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{{PageDescription}}
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* Space characters are printed until the print cursor reaches the designated {{Parameter|column%}}, overwriting existing characters.
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* If a subsequent TAB ''column%'' is less than the current position, TAB moves the next print to that column on the next row.
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* [[ASCII]] [[CHR$]](9) can be substituted for sequencial 9 space column moves.
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* [[Comma]] PRINT spacing is up to 15 column places (IE: TAB(15)) to a maximum column of 57.
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* When printing to a file, a carriage return([[CHR$]](13)) and linefeed([[CHR$]](10)) character are output when it moves to the next row.
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* '''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]].
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: In QB64, TAB [[concatenation]] is allowed instead of [[semicolon]]s. Example: {{text|PRINT "text" + TAB(9) + "here"|green}}
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''Example:'' Comparing TAB to [[comma]] print spacing which moves the next text print 15 columns.
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{{CodeStart}} '' ''
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{{Cl|PRINT}} {{Cl|TAB}}(15); "T" 'TAB spacing
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{{Cl|PRINT}} , "T" '' '' 'comma spacing
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{{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{text|;|red}} {{Cl|TAB}}(20); "A"; {{Cl|TAB}}(15); "B" 'semicolons add nothing to position
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{{Cl|PRINT}} {{Cl|TAB}}(15); "T"{{text|,|red}} {{Cl|TAB}}(20); "A"; {{Cl|TAB}}(15); "B" 'comma moves column position beyond 20 '' ''
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{{CodeEnd}}
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{{OutputStart}} T
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T
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T A
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B
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T
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A
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B{{OutputEnd}}
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: ''Explanation:'' TAB moves the PRINT down to the next row when the current column position is more than the TAB position.
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{{PageSeeAlso}}
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* [[PRINT]], [[LPRINT]]
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* [[SPC]], [[SPACE$]]
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* [[STRING$]]
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* [[CHR$]], [[ASCII]]
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{{PageNavigation}}
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