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<?xml version="1.0" encoding="UTF-8"?>
<helpdocument version="1.0">
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<meta>
<topic id="textsbasicshared03090301xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">GoSub...Return Statement</title>
<filename>/text/sbasic/shared/03090301.xhp</filename>
</topic>
</meta>
<body>
<section id="gosubreturn">
<bookmark xml-lang="en-US" branch="index" id="bm_id3147242">
<bookmark_value>GoSub...Return statement</bookmark_value>
<bookmark_value>label; in GoSub...Return statement</bookmark_value>
</bookmark>
<h1 id="hd_id3147242" xml-lang="en-US"><variable id="GoSubh1"><link href="text/sbasic/shared/03090301.xhp" name="GoSub...Return Statement">GoSub...Return Statement</link></variable></h1>
<paragraph id="par_id3145316" role="paragraph" xml-lang="en-US">Calls a subroutine that is indicated by a label inside a <literal>Sub</literal> or a <literal>Function</literal>. The statements following the label are executed until the next <literal>Return</literal> statement. Afterwards, the program continues with the statement that follows the <literal>GoSub</literal> statement.</paragraph>
</section>
<embed href="text/sbasic/shared/00000003.xhp#functsyntax"/>
<bascode>
<paragraph id="par_id3145069" role="bascode" xml-lang="en-US">GoSub label[:]</paragraph>
</bascode>
<embed href="text/sbasic/shared/00000003.xhp#functparameters"/>
<paragraph role="paragraph" id="par_id471588670859073"><emph>label: </emph>A line identifier indicating where to continue execution. The scope of a label in that of the routine it belongs to.</paragraph>
<paragraph id="par_id3147318" role="paragraph" xml-lang="en-US">The <literal>GoSub</literal> statement calls a local subroutine indicated by a label from within a subroutine or a function. The name of the label must end with a colon (":").</paragraph>
<bascode>
<paragraph role="bascode" id="bas_id171588670446922" localize="false">Sub/Function foo</paragraph>
<paragraph role="bascode" id="bas_id411588670455217" xml-lang="en-US"> ' statements</paragraph>
<paragraph role="bascode" id="bas_id315886704565218" localize="false"> GoSub label</paragraph>
<paragraph role="bascode" id="bas_id421588670457589" xml-lang="en-US"> ' statements </paragraph>
<paragraph role="bascode" id="bas_id551588670457866" localize="false"> Exit Sub/Function</paragraph>
<paragraph role="bascode" id="bas_id721588670458055" localize="false">label:</paragraph>
<paragraph role="bascode" id="bas_id171588670458263" xml-lang="en-US"> ' statements </paragraph>
<paragraph role="bascode" id="bas_id881588670473041" localize="false"> Return</paragraph>
<paragraph role="bascode" id="bas_id661588670476240" localize="false">End Sub/Function</paragraph>
</bascode>
<paragraph id="par_id3153190" role="warning" xml-lang="en-US">If the program encounters a Return statement not preceded by <emph>GoSub</emph>, $[officename] Basic returns an error message. Use <emph>Exit Sub</emph> or <emph>Exit Function</emph> to ensure that the program leaves a Sub or Function before reaching the next Return statement.</paragraph>
<paragraph id="par_id3145799" role="paragraph" xml-lang="en-US">The following example demonstrates the use of <emph>GoSub</emph> and <emph>Return</emph>. By executing a program section twice, the program calculates the square root of two numbers that are entered by the user.</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#functexample"/>
<bascode>
<paragraph id="par_idm1341591488" role="bascode" localize="false" xml-lang="en-US">Sub ExampleGoSub</paragraph>
<paragraph id="par_idm1341590256" role="bascode" localize="false" xml-lang="en-US">Dim iInputa As Single</paragraph>
<paragraph id="par_idm1341589024" role="bascode" localize="false" xml-lang="en-US">Dim iInputb As Single</paragraph>
<paragraph id="par_idm1341587792" role="bascode" localize="false" xml-lang="en-US">Dim iInputc As Single</paragraph>
<paragraph id="par_id3146970" role="bascode" xml-lang="en-US"> iInputa = Int(InputBox("Enter the first number: ","NumberInput"))</paragraph>
<paragraph id="par_id3150329" role="bascode" xml-lang="en-US"> iInputb = Int(InputBox("Enter the second number: ","NumberInput"))</paragraph>
<paragraph id="par_idm1341583040" role="bascode" localize="false" xml-lang="en-US"> iInputc=iInputa</paragraph>
<paragraph id="par_idm1341581808" role="bascode" localize="false" xml-lang="en-US"> GoSub SquareRoot</paragraph>
<paragraph id="par_id3154756" role="bascode" xml-lang="en-US"> Print "The square root of";iInputa;" is";iInputc</paragraph>
<paragraph id="par_idm1341578832" role="bascode" localize="false" xml-lang="en-US"> iInputc=iInputb</paragraph>
<paragraph id="par_idm1341577600" role="bascode" localize="false" xml-lang="en-US"> GoSub SquareRoot</paragraph>
<paragraph id="par_id3147340" role="bascode" xml-lang="en-US"> Print "The square root of";iInputb;" is";iInputc</paragraph>
<paragraph id="par_idm1341574624" role="bascode" localize="false" xml-lang="en-US"> Exit Sub</paragraph>
<paragraph id="par_idm1341573392" role="bascode" localize="false" xml-lang="en-US">SquareRoot:</paragraph>
<paragraph id="par_idm1341572160" role="bascode" localize="false" xml-lang="en-US"> iInputc=sqr(iInputc)</paragraph>
<paragraph id="par_idm1341570912" role="bascode" localize="false" xml-lang="en-US"> Return</paragraph>
<paragraph id="par_idm1341569680" role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
<section id="relatedtopics">
<embed href="text/sbasic/shared/03090302.xhp#GoToh1"/>
<embed href="text/sbasic/shared/03090303.xhp#OnGoSubGoToh1"/>
</section>
</body>
</helpdocument>
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