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<?xml version="1.0" encoding="UTF-8"?> <!--*********************************************************************** * * The Contents of this file are made available subject to the terms of * either of the following licenses * * - GNU Lesser General Public License Version 2.1 * - Sun Industry Standards Source License Version 1.1 * * Sun Microsystems Inc., October, 2000 * * GNU Lesser General Public License Version 2.1 * ============================================= * Copyright 2000 by Sun Microsystems, Inc. * 901 San Antonio Road, Palo Alto, CA 94303, USA * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License version 2.1, as published by the Free Software Foundation. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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You may obtain a copy of the * License at http://www.openoffice.org/license.html. * * Software provided under this License is provided on an "AS IS" basis, * WITHOUT WARRUNTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, * WITHOUT LIMITATION, WARRUNTIES THAT THE SOFTWARE IS FREE OF DEFECTS, * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. * See the License for the specific provisions governing your rights and * obligations concerning the Software. * * The Initial Developer of the Original Code is: Sun Microsystems, Inc.. * * Copyright: 2000 by Sun Microsystems, Inc. * * All Rights Reserved. * * Contributor(s): _______________________________________ * * ************************************************************************--> <helpdocument version="1.0"> <meta> <topic id="textsbasicshared03090101xml" indexer="include" status="PUBLISH"> <title id="tit" xml-lang="en-US">If...Then...Else Statement [Runtime]</title> <filename>/text/sbasic/shared/03090101.xhp</filename> </topic> <history> <created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created> <lastedited date="2004-08-24T12:54:53">converted from old format - fpe</lastedited> </history> </meta> <body> <section id="ifthenelse"> <bookmark xml-lang="en-US" branch="index" id="bm_id3154422"><bookmark_value>If statement</bookmark_value> </bookmark> <paragraph role="heading" id="hd_id3154422" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03090101.xhp" name="If...Then...Else Statement [Runtime]">If...Then...Else Statement [Runtime]</link></paragraph> <paragraph role="paragraph" id="par_id3155555" xml-lang="en-US" l10n="U" oldref="2">Defines one or more statement blocks that you only want to execute if a given condition is True.</paragraph> </section> <paragraph role="heading" id="hd_id3146957" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph> <paragraph role="paragraph" id="par_id3153126" xml-lang="en-US" l10n="U" oldref="4">If condition=true Then Statement block [ElseIf condition=true Then] Statement block [Else] Statement block End If</paragraph> <paragraph role="heading" id="hd_id3155419" xml-lang="en-US" level="2" l10n="U" oldref="5">Parameters:</paragraph> <paragraph role="paragraph" id="par_id3153062" xml-lang="en-US" l10n="U" oldref="6">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> <paragraph role="paragraph" id="par_id3153192" xml-lang="en-US" l10n="U" oldref="7">You can nest multiple <emph>If...Then</emph> statements.</paragraph> <paragraph role="paragraph" id="par_id3154684" xml-lang="en-US" l10n="U" oldref="8"> <emph>Else</emph> and <emph>ElseIf</emph> statements are optional.</paragraph> <paragraph role="warning" id="par_id3152939" xml-lang="en-US" l10n="U" oldref="9">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> <paragraph role="paragraph" id="par_id3153951" xml-lang="en-US" l10n="U" oldref="10">The following example enables you to enter the expiration date of a product, and determines if the expiration date has passed.</paragraph> <paragraph role="heading" id="hd_id3152576" xml-lang="en-US" level="2" l10n="U" oldref="11">Example:</paragraph> <paragraph role="paragraph" id="par_id3150011" xml-lang="en-US" l10n="U" oldref="12">Sub ExampleIfThenDate</paragraph> <paragraph role="paragraph" id="par_id3148645" xml-lang="en-US" l10n="U" oldref="13">Dim sDate as String</paragraph> <paragraph role="paragraph" id="par_id3155855" xml-lang="en-US" l10n="U" oldref="14">Dim sToday as String</paragraph> <paragraph role="paragraph" id="par_id3154490" xml-lang="en-US" l10n="U" oldref="16">sDate = InputBox("Enter the expiration date (MM.DD.YYYY)")</paragraph> <paragraph role="paragraph" id="par_id3154943" xml-lang="en-US" l10n="U" oldref="17">sDate = Right$(sDate, 4) + Mid$(sDate, 4, 2) + Left$(sDate, 2)</paragraph> <paragraph role="paragraph" id="par_id3154098" xml-lang="en-US" l10n="U" oldref="18">sToday = Date$</paragraph> <paragraph role="paragraph" id="par_id3144765" xml-lang="en-US" l10n="U" oldref="19">sToday = Right$(sToday, 4)+ Mid$(sToday, 4, 2) + Left$(sToday, 2)</paragraph> <paragraph role="paragraph" id="par_id3154792" xml-lang="en-US" l10n="U" oldref="20">If sDate < sToday Then</paragraph> <paragraph role="paragraph" id="par_id3155601" xml-lang="en-US" l10n="U" oldref="21">MsgBox "The expiration date has passed"</paragraph> <paragraph role="paragraph" id="par_id3146972" xml-lang="en-US" l10n="U" oldref="22">ElseIf sDate > sToday Then</paragraph> <paragraph role="paragraph" id="par_id3146912" xml-lang="en-US" l10n="U" oldref="23">MsgBox "The expiration date has not yet passed"</paragraph> <paragraph role="paragraph" id="par_id3153710" xml-lang="en-US" l10n="U" oldref="24">Else</paragraph> <paragraph role="paragraph" id="par_id3154754" xml-lang="en-US" l10n="U" oldref="25">MsgBox "The expiration date is today"</paragraph> <paragraph role="paragraph" id="par_id3154361" xml-lang="en-US" l10n="U" oldref="26">End If</paragraph> <paragraph role="paragraph" id="par_id3148405" xml-lang="en-US" l10n="U" oldref="28">End Sub</paragraph> </body> </helpdocument> 
