blob: 117c632cb6c8a4a7a50c0f686c5ad53f10a670f1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
<?xml version="1.0" encoding="UTF-8"?>
<!--
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
-->
<helpdocument version="1.0">
<meta>
<topic id="textsbasicshared03090301xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">GoSub...Return Statement [Runtime]</title>
<filename>/text/sbasic/shared/03090301.xhp</filename>
</topic>
<history>
<created date="2003-10-31T00:00:00">Sun Microsystems, Inc.</created>
<lastedited date="2004-08-24T12:39:27">converted from old format - fpe</lastedited>
</history>
</meta>
<body>
<section id="gosubreturn">
<bookmark xml-lang="en-US" branch="index" id="bm_id3147242"><bookmark_value>GoSub...Return statement</bookmark_value>
</bookmark>
<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>
<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>
</section>
<paragraph role="heading" id="hd_id3145609" xml-lang="en-US" level="2" l10n="U" oldref="3">Syntax:</paragraph>
<bascode>
<paragraph role="bascode" id="par_id3145069" xml-lang="en-US" oldref="4">see Parameters</paragraph>
</bascode>
<paragraph role="heading" id="hd_id3147265" xml-lang="en-US" level="2" l10n="U" oldref="5">Parameters:</paragraph>
<paragraph role="paragraph" id="par_id3148664" xml-lang="en-US" l10n="U" oldref="6">Sub/Function</paragraph>
<paragraph role="paragraph" id="par_id3150400" xml-lang="en-US" l10n="U" oldref="7">statement block</paragraph>
<paragraph role="paragraph" id="par_id3154140" xml-lang="en-US" l10n="U" oldref="8"> Label</paragraph>
<paragraph role="paragraph" id="par_id3150869" xml-lang="en-US" l10n="U" oldref="9">statement block</paragraph>
<paragraph role="paragraph" id="par_id3154909" xml-lang="en-US" l10n="U" oldref="10">GoSub Label</paragraph>
<paragraph role="paragraph" id="par_id3153969" xml-lang="en-US" l10n="U" oldref="11">Exit Sub/Function</paragraph>
<paragraph role="paragraph" id="par_id3154685" xml-lang="en-US" l10n="U" oldref="12">Label:</paragraph>
<paragraph role="paragraph" id="par_id3145786" xml-lang="en-US" l10n="U" oldref="13">statement block</paragraph>
<paragraph role="paragraph" id="par_id3159252" xml-lang="en-US" l10n="U" oldref="14">Return</paragraph>
<paragraph role="paragraph" id="par_id3154321" xml-lang="en-US" l10n="U" oldref="15">End Sub/Function</paragraph>
<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>
<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>
<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>
<paragraph role="heading" id="hd_id3156284" xml-lang="en-US" level="2" l10n="U" oldref="20">Example:</paragraph>
<bascode>
<paragraph role="bascode" localize="false" xml-lang="en-US">Sub ExampleGoSub</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim iInputa As Single</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim iInputb As Single</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">Dim iInputc As Single</paragraph>
<paragraph role="bascode" id="par_id3146970" xml-lang="en-US" l10n="U" oldref="25"> iInputa = Int(InputBox("Enter the first number: ","NumberInput"))</paragraph>
<paragraph role="bascode" id="par_id3150329" xml-lang="en-US" l10n="U" oldref="26"> iInputb = Int(InputBox("Enter the second number: ","NumberInput"))</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> iInputc=iInputa</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> GoSub SquareRoot</paragraph>
<paragraph role="bascode" id="par_id3154756" xml-lang="en-US" l10n="U" oldref="29"> Print "The square root of";iInputa;" is";iInputc</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> iInputc=iInputb</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> GoSub SquareRoot</paragraph>
<paragraph role="bascode" id="par_id3147340" xml-lang="en-US" l10n="U" oldref="32"> Print "The square root of";iInputb;" is";iInputc</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> Exit Sub</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">SquareRoot:</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> iInputc=sqr(iInputc)</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US"> Return</paragraph>
<paragraph role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
</body>
</helpdocument>
|
