forked from amazingfate/help
104 lines
7.5 KiB
XML
104 lines
7.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--***********************************************************************
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRUNTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRUNTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc..
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************-->
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<helpdocument version="1.0">
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<meta>
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<topic id="textsbasicshared03090101xml" indexer="include" status="PUBLISH">
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<title xml-lang="en-US" id="tit">If...Then...Else Statement [Runtime]</title>
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<filename>/text/sbasic/shared/03090101.xhp</filename>
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</topic>
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<history>
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<created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created>
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<lastedited date="2003-10-31T00:00:00">converted from old format - fpe</lastedited>
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</history>
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</meta>
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<body>
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<section id="ifthenelse">
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<bookmark xml-lang="en-US" branch="index" id="bm_id3154422"><bookmark_value>If;statement</bookmark_value></bookmark><paragraph id="hd_id3154422" role="heading" level="1" oldref="1" l10n="U" xml-lang="en-US"><link href="text/sbasic/shared/03090101.xhp" name="If...Then...Else Statement [Runtime]">If...Then...Else Statement [Runtime]</link></paragraph>
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<paragraph role="paragraph" id="par_id3155555" l10n="U" xml-lang="en-US" oldref="2">Defines one or more statement blocks that you only want to execute if a given condition is True.</paragraph>
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</section>
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<paragraph role="heading" level="2" id="hd_id3146957" l10n="U" xml-lang="en-US" oldref="3">Syntax:</paragraph>
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<paragraph role="paragraph" id="par_id3153126" l10n="U" xml-lang="en-US" oldref="4">If condition=true Then Statement block [ElseIf condition=true Then] Statement block [Else] Statement block End If</paragraph>
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<paragraph role="heading" level="2" id="hd_id3155419" l10n="U" xml-lang="en-US" oldref="5">Parameters:</paragraph>
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<paragraph xml-lang="en-US" oldref="6" l10n="U" role="paragraph" id="par_id3153062">The <emph>If...Then</emph> statement executes program blocks depending on given conditions. When $[officename] Basic encounters an <emph>If</emph> statement, the condition is tested. If the condition is True, all subsequent statements up to the next <emph>Else</emph> or <emph>ElseIf</emph> statement are executed. If the condition is False, and an <emph>ElseIf</emph> statement follows, $[officename] Basic tests the next condition and executes the following statements if the condition is True. If False, the program continues either with the next <emph>ElseIf</emph> or <emph>Else</emph> statement. Statements following <emph>Else</emph> are executed only if none of the previously tested conditions were True. After all conditions are evaluated, and the corresponding statements executed, the program continues with the statement following <emph>EndIf</emph>.</paragraph>
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<paragraph xml-lang="en-US" role="paragraph" id="par_id3153192" l10n="U" oldref="7">You can nest multiple <emph>If...Then</emph> statements.</paragraph>
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<paragraph l10n="U" xml-lang="en-US" role="paragraph" id="par_id3154684" oldref="8"><emph>Else</emph> and <emph>ElseIf</emph> statements are optional.</paragraph>
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<paragraph xml-lang="en-US" oldref="9" id="par_id3152939" l10n="U" role="warning">You can use <emph>GoTo</emph> and <emph>GoSub</emph> to jump out of an <emph>If...Then</emph> block, but not to jump into an <emph>If...Then</emph> structure.</paragraph>
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<paragraph role="paragraph" id="par_id3153951" l10n="U" xml-lang="en-US" oldref="10">The following example enables you to enter the expiration date of a product, and determines if the expiration date has passed.</paragraph>
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<paragraph role="heading" level="2" id="hd_id3152576" l10n="U" xml-lang="en-US" oldref="11">Example:</paragraph>
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<paragraph role="paragraph" id="par_id3150011" l10n="U" xml-lang="en-US" oldref="12">Sub ExampleIfThenDate</paragraph>
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<paragraph role="paragraph" id="par_id3148645" l10n="U" xml-lang="en-US" oldref="13">Dim sDate as String</paragraph>
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<paragraph role="paragraph" id="par_id3155855" l10n="U" xml-lang="en-US" oldref="14">Dim sToday as String</paragraph>
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<paragraph role="paragraph" id="par_id3154490" l10n="U" xml-lang="en-US" oldref="16">sDate = InputBox("Enter the expiration date (MM.DD.YYYY)")</paragraph>
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<paragraph role="paragraph" id="par_id3154943" l10n="U" xml-lang="en-US" oldref="17">sDate = Right$(sDate, 4) + Mid$(sDate, 4, 2) + Left$(sDate, 2)</paragraph>
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<paragraph role="paragraph" id="par_id3154098" l10n="U" xml-lang="en-US" oldref="18">sToday = Date$</paragraph>
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<paragraph role="paragraph" id="par_id3144765" l10n="U" xml-lang="en-US" oldref="19">sToday = Right$(sToday, 4)+ Mid$(sToday, 4, 2) + Left$(sToday, 2)</paragraph>
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<paragraph role="paragraph" id="par_id3154792" l10n="U" xml-lang="en-US" oldref="20">If sDate < sToday Then</paragraph>
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<paragraph role="paragraph" id="par_id3155601" l10n="U" xml-lang="en-US" oldref="21">MsgBox "The expiration date has passed"</paragraph>
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<paragraph role="paragraph" id="par_id3146972" l10n="U" xml-lang="en-US" oldref="22">ElseIf sDate > sToday Then</paragraph>
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<paragraph role="paragraph" id="par_id3146912" l10n="U" xml-lang="en-US" oldref="23">MsgBox "The expiration date has not yet passed"</paragraph>
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<paragraph role="paragraph" id="par_id3153710" l10n="U" xml-lang="en-US" oldref="24">Else</paragraph>
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<paragraph role="paragraph" id="par_id3154754" l10n="U" xml-lang="en-US" oldref="25">MsgBox "The expiration date is today"</paragraph>
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<paragraph role="paragraph" id="par_id3154361" l10n="U" xml-lang="en-US" oldref="26">End If</paragraph>
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<paragraph role="paragraph" id="par_id3148405" l10n="U" xml-lang="en-US" oldref="28">End Sub</paragraph>
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</body>
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</helpdocument>
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