1*b1cdbd2cSJim Jagielski<?xml version="1.0" encoding="UTF-8"?> 2*b1cdbd2cSJim Jagielski 3*b1cdbd2cSJim Jagielski 4*b1cdbd2cSJim Jagielski<!--*********************************************************** 5*b1cdbd2cSJim Jagielski * 6*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 7*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 8*b1cdbd2cSJim Jagielski * distributed with this work for additional information 9*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 10*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 11*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 12*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 13*b1cdbd2cSJim Jagielski * 14*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 15*b1cdbd2cSJim Jagielski * 16*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 17*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 18*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 20*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 21*b1cdbd2cSJim Jagielski * under the License. 22*b1cdbd2cSJim Jagielski * 23*b1cdbd2cSJim Jagielski ***********************************************************--> 24*b1cdbd2cSJim Jagielski 25*b1cdbd2cSJim Jagielski 26*b1cdbd2cSJim Jagielski 27*b1cdbd2cSJim Jagielski<helpdocument version="1.0"> 28*b1cdbd2cSJim Jagielski<meta> 29*b1cdbd2cSJim Jagielski<topic id="textsbasicshared03090301xml" indexer="include" status="PUBLISH"> 30*b1cdbd2cSJim Jagielski<title id="tit" xml-lang="en-US">GoSub...Return Statement [Runtime]</title> 31*b1cdbd2cSJim Jagielski<filename>/text/sbasic/shared/03090301.xhp</filename> 32*b1cdbd2cSJim Jagielski</topic> 33*b1cdbd2cSJim Jagielski<history> 34*b1cdbd2cSJim Jagielski<created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created> 35*b1cdbd2cSJim Jagielski<lastedited date="2004-08-24T12:39:27">converted from old format - fpe</lastedited> 36*b1cdbd2cSJim Jagielski</history> 37*b1cdbd2cSJim Jagielski</meta> 38*b1cdbd2cSJim Jagielski<body> 39*b1cdbd2cSJim Jagielski<section id="gosubreturn"> 40*b1cdbd2cSJim Jagielski<bookmark xml-lang="en-US" branch="index" id="bm_id3147242"><bookmark_value>GoSub...Return statement</bookmark_value> 41*b1cdbd2cSJim Jagielski</bookmark> 42*b1cdbd2cSJim Jagielski<paragraph role="heading" id="hd_id3147242" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03090301.xhp" name="GoSub...Return Statement [Runtime]">GoSub...Return Statement [Runtime]</link></paragraph> 43*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3145316" xml-lang="en-US" l10n="U" oldref="2">Calls a subroutine that is indicated by a label from a subroutine or a function. 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> 44*b1cdbd2cSJim Jagielski</section> 45*b1cdbd2cSJim Jagielski<paragraph role="heading" id="hd_id3145609" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph> 46*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3145069" xml-lang="en-US" l10n="U" oldref="4">see Parameters</paragraph> 47*b1cdbd2cSJim Jagielski<paragraph role="heading" id="hd_id3147265" xml-lang="en-US" level="2" l10n="U" oldref="5">Parameters:</paragraph> 48*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3148664" xml-lang="en-US" l10n="U" oldref="6">Sub/Function</paragraph> 49*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3150400" xml-lang="en-US" l10n="U" oldref="7">statement block</paragraph> 50*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154140" xml-lang="en-US" l10n="U" oldref="8"> Label</paragraph> 51*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3150869" xml-lang="en-US" l10n="U" oldref="9">statement block</paragraph> 52*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154909" xml-lang="en-US" l10n="U" oldref="10">GoSub Label</paragraph> 53*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3153969" xml-lang="en-US" l10n="U" oldref="11">Exit Sub/Function</paragraph> 54*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154685" xml-lang="en-US" l10n="U" oldref="12">Label:</paragraph> 55*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3145786" xml-lang="en-US" l10n="U" oldref="13">statement block</paragraph> 56*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3159252" xml-lang="en-US" l10n="U" oldref="14">Return</paragraph> 57*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154321" xml-lang="en-US" l10n="U" oldref="15">End Sub/Function</paragraph> 58*b1cdbd2cSJim Jagielski<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> 59*b1cdbd2cSJim Jagielski<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>, $[officename] Basic returns an error message. Use <emph>Exit Sub</emph> or <emph>Exit Function</emph> to ensure that the program leaves a Sub or Function before reaching the next Return statement.</paragraph> 60*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3145799" xml-lang="en-US" l10n="U" oldref="19">The following example demonstrates the use of <emph>GoSub</emph> and <emph>Return</emph>. By executing a program section twice, the program calculates the square root of two numbers that are entered by the user.</paragraph> 61*b1cdbd2cSJim Jagielski<paragraph role="heading" id="hd_id3156284" xml-lang="en-US" level="2" l10n="U" oldref="20">Example:</paragraph> 62*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3151073" xml-lang="en-US" l10n="U" oldref="21">Sub ExampleGoSub</paragraph> 63*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154097" xml-lang="en-US" l10n="U" oldref="22">dim iInputa as Single</paragraph> 64*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3150715" xml-lang="en-US" l10n="U" oldref="23">dim iInputb as Single</paragraph> 65*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3153416" xml-lang="en-US" l10n="U" oldref="24">dim iInputc as Single</paragraph> 66*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3146970" xml-lang="en-US" l10n="U" oldref="25">iInputa = Int(InputBox$ ("Enter the first number: ","NumberInput"))</paragraph> 67*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3150329" xml-lang="en-US" l10n="U" oldref="26">iInputb = Int(InputBox$ ("Enter the second number: ","NumberInput"))</paragraph> 68*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3156277" xml-lang="en-US" l10n="U" oldref="27">iInputc=iInputa</paragraph> 69*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3150321" xml-lang="en-US" l10n="U" oldref="28">GoSub SquareRoot</paragraph> 70*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154756" xml-lang="en-US" l10n="U" oldref="29">Print "The square root of";iInputa;" is";iInputc</paragraph> 71*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3155764" xml-lang="en-US" l10n="U" oldref="30">iInputc=iInputb</paragraph> 72*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3152960" xml-lang="en-US" l10n="U" oldref="31">GoSub SquareRoot</paragraph> 73*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3147340" xml-lang="en-US" l10n="U" oldref="32">Print "The square root of";iInputb;" is";iInputc</paragraph> 74*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3166450" xml-lang="en-US" l10n="U" oldref="33">Exit Sub</paragraph> 75*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3155176" xml-lang="en-US" l10n="U" oldref="34">SquareRoot:</paragraph> 76*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3149257" xml-lang="en-US" l10n="U" oldref="35">iInputc=sqr(iInputc)</paragraph> 77*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3146316" xml-lang="en-US" l10n="U" oldref="36">Return</paragraph> 78*b1cdbd2cSJim Jagielski<paragraph role="paragraph" id="par_id3154703" xml-lang="en-US" l10n="U" oldref="37">End Sub</paragraph> 79*b1cdbd2cSJim Jagielski</body> 80*b1cdbd2cSJim Jagielski</helpdocument> 81