68 lines
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68 lines
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<meta name="abstract" content="The Call Bound Procedure (CALLPRC) command calls a procedure named on the command, and passes control to it." />
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<title>Use the CALLPRC command</title>
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<body id="callp"><a name="callp"><!-- --></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">Use the CALLPRC command</h1>
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<div><p>The <span class="cmdname">Call Bound Procedure (CALLPRC)</span> command calls
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a procedure named on the command, and passes control to it. </p>
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<div class="section"> <p> The <span class="cmdname">Call Bound Procedure (CALLPRC)</span> command
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has the following format: </p>
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<pre>CALLPRC PRC(procedure-name) PARM(parameter-values)
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RTNVAL(return-value-variable)</pre>
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<p>The procedure name may not be a variable. When the called procedure
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finishes running, control returns to the next command in the calling procedure.</p>
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<br /><img src="rbafn539.gif" alt="The procedure name may not be a variable. The PARM parameter is discussed under Passing Parameters between Programs and Procedures. When the called procedure finishes running, control returns to the next command in the calling procedure." /><br /><p>The sequence of CALLPRC commands
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in a set of procedures calling each other is the call stack. For example,
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look at this series:</p>
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<br /><img src="rbafn540.gif" alt="The sequence of CALLPRC commands in a set of procedures calling each other is the call stack example." /><br /><p>In this series, the call
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stack is: </p>
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<br /><img src="rbafn530.gif" alt="Call stack example." /><br /><p>When PROGC finishes processing, control returns to PROGB at the
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command after the call to PROGC. Control is thus returned up the call stack.
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This occurs whether or not PROGC ends with a <span class="cmdname">Return
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(RETURN)</span> or an <span class="cmdname">End Program (ENDPGM)</span> command.</p>
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<p>A
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CL procedure can call itself.</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="passc.htm" title="This presents different options for passing control to a procedure.">Pass control</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="passp.htm" title="When you pass control to another program or procedure, you can also pass information to it for modification or use within the receiving program or procedure.">Pass parameters</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="../cl/callprc.htm">Call Bound Procedure (CALLPRC) command</a></div>
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