117 lines
6.6 KiB
HTML
117 lines
6.6 KiB
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.Title" content="Display the values of variables" />
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<meta name="abstract" content="You can display the values of program variables when you are at a breakpoint." />
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<meta name="description" content="You can display the values of program variables when you are at a breakpoint." />
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<meta name="DC.subject" content="program, variable, displaying, displaying value in program, value of variable in a program, DSPPGMVAR (Display Program Variable) command, Display Program Variable (DSPPGMVAR) command, command, CL, DSPPGMVAR (Display Program Variable), Display Program Variable (DSPPGMVAR), program variable" />
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<meta name="keywords" content="program, variable, displaying, displaying value in program, value of variable in a program, DSPPGMVAR (Display Program Variable) command, Display Program Variable (DSPPGMVAR) command, command, CL, DSPPGMVAR (Display Program Variable), Display Program Variable (DSPPGMVAR), program variable" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Display the values of variables</title>
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</head>
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<body id="dspva"><a name="dspva"><!-- --></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">Display the values of variables</h1>
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<div><p>You can display the values of program variables when you are at
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a breakpoint.</p>
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<div class="section"> <p>You can have this done automatically on the breakpoint display
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by specifying the variable names on the <span class="cmdname">Add Breakpoint (ADDBKP)</span> command,
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or you can enter the <span class="cmdname">Display Program Variable (DSPPGMVAR)</span> command
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at the breakpoint by pressing F10 to show the command entry display. Only
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10 variables can be specified on one <span class="cmdname">Display Program Variable (DSPPGMVAR)</span> command.
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For character and bit variables, you can tell the system to begin displaying
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the value of the variable starting at a certain position and for a specified
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length. Variables can be displayed in either character or hexadecimal format.
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</p>
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<div class="note"><span class="notetitle">Note:</span> <ol><li>If you specify an array variable, you can do one of the following: <ol type="a"><li>Specify the subscript values of the array element you want to display.
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The subscript values can either be integer values or the names of numeric
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variables in the program.</li>
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<li>Display the entire array by not entering any subscripts.</li>
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<li>Display a single-dimension cross-section of the array by specifying values
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for all subscripts except one, and an asterisk for that one subscript value.</li>
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</ol>
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</li>
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<li>Variable names can be specified as simple or qualified names, but must
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be placed between apostrophes. A qualified name can be specified in either
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of two ways: <ol type="a"><li>Variable names alternating with the special separator words OF or IN,
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ordered from lowest to highest qualification level. A blank must separate
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the variable name and the special separator word.</li>
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<li>Variable names separated by periods, ordered from highest to lowest qualification
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level.</li>
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</ol>
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</li>
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</ol>
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</div>
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<p>The following <span class="cmdname">Display Program Variable (DSPPGMVAR)</span> command
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displays the variable ARBAL used in the program CUS310. CUS310 is the default
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program, so it does not have to be specified. The entire value is to be displayed
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in character format. </p>
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<pre>DSPPGMVAR PGMVAR('&ARBAL')</pre>
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<p>The resulting display looks like this: </p>
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<pre class="screen"> Display Program Variables
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Program . . . . . . . . . . . . . . . . : CUS310
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Recursion level . . . . . . . . . . . . : 1
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Start position . . . . . . . . . . . . : 1
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Format . . . . . . . . . . . . . . . . : *CHAR
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Length . . . . . . . . . . . . . . . . : *DCL
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Variable . . . . . . . . . . . . . . . : &ARBAL
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Type . . . . . . . . . . . . . . . . : PACKED
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Length . . . . . . . . . . . . . . . : 5 2
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'610.00'
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Press Enter to continue.
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F3=Exit F12=Cancel
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</pre>
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<p>Some HLLs allow variables to be based on a user-specified pointer
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variable (HLL pointer). If you do not specify an explicit pointer for a based
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variable, the pointer specified in the HLL declaration (if any) is used.
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You must specify an explicit basing pointer if one was not specified in the
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HLL declaration for the based variable. The PGMVAR parameter allows you to
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specify up to five explicit basing pointers when referring to a based variable.
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When multiple basing pointers are specified, the first basing pointer specified
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is used to locate the second basing pointer, the second one is then used to
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locate the third, and so forth. The last pointer in the list of basing pointers
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is used to locate the primary variable.</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="opm.htm" title="You can debug your OPM programs by using testing functions.">Debug OPM programs</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/addbkp.htm">Add Breakpoint (ADDBKP) command</a></div>
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<div><a href="../cl/dsppgmvar.htm">Display Program Variable (DSPPGMVAR) command</a></div>
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</div>
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</div>
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</body>
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</html>
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