92 lines
4.5 KiB
HTML
92 lines
4.5 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="LEAVE command" />
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<meta name="abstract" content="The Leave (LEAVE) command can be used to exit an active DOWHILE, DOUNTIL, or DOFOR group." />
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<meta name="description" content="The Leave (LEAVE) command can be used to exit an active DOWHILE, DOUNTIL, or DOFOR group." />
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<meta name="DC.subject" content="LEAVE (Leave) command, command, CL, LEAVE (Leave), example, LEAVE command" />
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<meta name="DC.Relation" scheme="URI" content="../clfinder/finder.htm" />
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<meta name="DC.Relation" scheme="URI" content="../cl/leave.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>LEAVE command</title>
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</head>
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<body id="leavecmd"><a name="leavecmd"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">LEAVE command</h1>
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<div><p>The <span class="cmdname">Leave (LEAVE)</span> command can be used to exit
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an active DOWHILE, DOUNTIL, or DOFOR group. </p>
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<div class="section"><p> It provides a structured manner to leave an active group without
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resorting to the use of the <span class="cmdname">Goto (GOTO)</span> command. LEAVE
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is not valid with simple <span class="cmdname">Do (DO)</span> command groups.</p>
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<p>A <span class="cmdname">Leave
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(LEAVE)</span> command without a label will leave the innermost active
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DO group. Specifying a label allows the processing to break out of one or
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more enclosing groups.</p>
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<p>The following illustrates use of the <span class="cmdname">Leave
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(LEAVE)</span> command:</p>
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<pre>DO_1:
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DO_2:DOWHILE &LGL
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DO_3: DOFOR &INT FROM(0) TO(99)
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.
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.
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.
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IF (&A *EQ 12) THEN(LEAVE DO_1)
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.
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. /* Not processed if &A equals 12 */
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.
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IF (&A *GT 12) LEAVE
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.
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. /* Not processed if &A greater than 12 */
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.
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ENDDO
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.
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.
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.
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IF (&A *LT 0) (LEAVE DO_1)
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.
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. /* Not processed if &A less than zero */
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.
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ENDDO</pre>
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<p>In this example, the labels DO_1 and DO_2 are associated with
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the DOWHILE group. They can be specified on a LEAVE command appearing in
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either the DOWHILE or DOFOR group. When &A is equal to 12, the LEAVE
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DO_1 command is run and processing continues with the CL command following
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the second ENDDO.</p>
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<p>If &A is not equal to 12 but is greater than 12,
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the DOFOR group is exited and processing continues with next command following
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the first ENDDO.</p>
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<p>When the third <span class="cmdname">If (IF)</span> command is
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processed and &A is less than zero, processing continues with the next
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command following the first ENDDO.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="contp.htm" title="You can use commands to change the flow of logic within your CL procedure.">Control processing within a CL procedure</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../clfinder/finder.htm">CL command finder</a></div>
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<div><a href="../cl/leave.htm">Leave (LEAVE) command</a></div>
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</div>
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</div>
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</body>
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