79 lines
4.1 KiB
HTML
79 lines
4.1 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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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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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="GOTO command and labels" />
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<meta name="abstract" content="The GOTO command processes an unconditional branch." />
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<meta name="description" content="The GOTO command processes an unconditional branch." />
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<meta name="DC.subject" content="GOTO (Go To) command, command, CL, GOTO (Go To), label, in CL procedure, example, GOTO command" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>GOTO command and labels</title>
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</head>
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<body id="gotoc"><a name="gotoc"><!-- --></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">GOTO command and labels</h1>
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<div><p>The GOTO command processes an unconditional branch.</p>
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<div class="section"><p>With the GOTO command, processing is directed to another part
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(identified by a label) of the procedure whenever the GOTO command is encountered.
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This branching does not depend on the evaluation of an expression. After
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the branch to the labeled statement, processing begins at that statement and
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continues in consecutive sequence; it does not return to the GOTO command
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unless specifically directed back by another instruction. You
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can branch forward or backward. You cannot use GOTO to go to a label outside
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the procedure, nor can you use a GOTO to branch into or out of a subroutine
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defined within the procedure. The GOTO command has one parameter, which contains
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the label of the statement branched to: </p>
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<pre>GOTO CMDLBL(label)</pre>
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<p>A label identifies the statement in the procedure to which
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processing is directed by the GOTO command. To use a GOTO command, the command
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you are branching to must have a label. </p>
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<pre> PGM
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.
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.
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.
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START: SNDRCVF RCDFMT(MENU)
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IF (&RESP=1) THEN(CALL CUS210)
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.
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.
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.
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GOTO START
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.
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.
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.
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ENDPGM</pre>
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<p>The label in this example is START. A label can have as many
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as 10 characters and must be immediately followed by a colon, but blanks can
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occur between the label and the command name.</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/goto.htm">Go To (GOTO) command</a></div>
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</div>
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</div>
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</body>
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</html> |