1cdf0e10cSrcweir<?xml version="1.0" encoding="UTF-8"?> 2cdf0e10cSrcweir 3226a8927SAndrew Rist<!--*********************************************************** 4253bff03Smseidel * 5226a8927SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 6226a8927SAndrew Rist * or more contributor license agreements. See the NOTICE file 7226a8927SAndrew Rist * distributed with this work for additional information 8226a8927SAndrew Rist * regarding copyright ownership. The ASF licenses this file 9226a8927SAndrew Rist * to you under the Apache License, Version 2.0 (the 10226a8927SAndrew Rist * "License"); you may not use this file except in compliance 11226a8927SAndrew Rist * with the License. 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The statements following the label are executed until the next Return statement. Afterwards, the program continues with the statement that follows the <emph>GoSub</emph> statement.</paragraph> 38cdf0e10cSrcweir</section> 39cdf0e10cSrcweir<paragraph role="heading" id="hd_id3145609" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph> 40cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3145069" xml-lang="en-US" l10n="U" oldref="4">see Parameters</paragraph> 41cdf0e10cSrcweir<paragraph role="heading" id="hd_id3147265" xml-lang="en-US" level="2" l10n="U" oldref="5">Parameters:</paragraph> 42cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3148664" xml-lang="en-US" l10n="U" oldref="6">Sub/Function</paragraph> 43cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3150400" xml-lang="en-US" l10n="U" oldref="7">statement block</paragraph> 44cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154140" xml-lang="en-US" l10n="U" oldref="8"> Label</paragraph> 45cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3150869" xml-lang="en-US" l10n="U" oldref="9">statement block</paragraph> 46cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154909" xml-lang="en-US" l10n="U" oldref="10">GoSub Label</paragraph> 47cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3153969" xml-lang="en-US" l10n="U" oldref="11">Exit Sub/Function</paragraph> 48cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154685" xml-lang="en-US" l10n="U" oldref="12">Label:</paragraph> 49cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3145786" xml-lang="en-US" l10n="U" oldref="13">statement block</paragraph> 50cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3159252" xml-lang="en-US" l10n="U" oldref="14">Return</paragraph> 51cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154321" xml-lang="en-US" l10n="U" oldref="15">End Sub/Function</paragraph> 52cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3147318" xml-lang="en-US" l10n="U" oldref="16">The <emph>GoSub</emph> 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> 53cdf0e10cSrcweir<paragraph role="warning" id="par_id3153190" xml-lang="en-US" l10n="U" oldref="17">If the program encounters a Return statement not preceded by <emph>GoSub</emph>, $[officename] Basic returns an error message. Use <emph>Exit Sub</emph> or <emph>Exit Function</emph> to ensure that the program leaves a Sub or Function before reaching the next Return statement.</paragraph> 54cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3145799" xml-lang="en-US" l10n="U" oldref="19">The following example demonstrates the use of <emph>GoSub</emph> and <emph>Return</emph>. By executing a program section twice, the program calculates the square root of two numbers that are entered by the user.</paragraph> 55cdf0e10cSrcweir<paragraph role="heading" id="hd_id3156284" xml-lang="en-US" level="2" l10n="U" oldref="20">Example:</paragraph> 56cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3151073" xml-lang="en-US" l10n="U" oldref="21">Sub ExampleGoSub</paragraph> 57cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154097" xml-lang="en-US" l10n="U" oldref="22">dim iInputa as Single</paragraph> 58cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3150715" xml-lang="en-US" l10n="U" oldref="23">dim iInputb as Single</paragraph> 59cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3153416" xml-lang="en-US" l10n="U" oldref="24">dim iInputc as Single</paragraph> 6090189a2dSHerbert Dürr<paragraph role="paragraph" id="par_id3146970" xml-lang="en-US" l10n="U" oldref="25">iInputa = Int(InputBox$ ("Enter the first number: ","NumberInput"))</paragraph> 6190189a2dSHerbert Dürr<paragraph role="paragraph" id="par_id3150329" xml-lang="en-US" l10n="U" oldref="26">iInputb = Int(InputBox$ ("Enter the second number: ","NumberInput"))</paragraph> 62cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3156277" xml-lang="en-US" l10n="U" oldref="27">iInputc=iInputa</paragraph> 63cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3150321" xml-lang="en-US" l10n="U" oldref="28">GoSub SquareRoot</paragraph> 64cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154756" xml-lang="en-US" l10n="U" oldref="29">Print "The square root of";iInputa;" is";iInputc</paragraph> 65cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3155764" xml-lang="en-US" l10n="U" oldref="30">iInputc=iInputb</paragraph> 66cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3152960" xml-lang="en-US" l10n="U" oldref="31">GoSub SquareRoot</paragraph> 67cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3147340" xml-lang="en-US" l10n="U" oldref="32">Print "The square root of";iInputb;" is";iInputc</paragraph> 68cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3166450" xml-lang="en-US" l10n="U" oldref="33">Exit Sub</paragraph> 69cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3155176" xml-lang="en-US" l10n="U" oldref="34">SquareRoot:</paragraph> 70cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3149257" xml-lang="en-US" l10n="U" oldref="35">iInputc=sqr(iInputc)</paragraph> 71cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3146316" xml-lang="en-US" l10n="U" oldref="36">Return</paragraph> 72cdf0e10cSrcweir<paragraph role="paragraph" id="par_id3154703" xml-lang="en-US" l10n="U" oldref="37">End Sub</paragraph> 73cdf0e10cSrcweir</body> 74cdf0e10cSrcweir</helpdocument> 75