http://wiki.signature.net/index.php?action=history&feed=atom&title=IB_Statements%2Fongoto 2026-04-06T23:20:12Z Revision history for this page on the wiki MediaWiki 1.16.0 http://wiki.signature.net/index.php?title=IB_Statements/ongoto&diff=358&oldid=prev 2009-05-20T11:03:56Z

<p>New page: &#39;&#39;&#39;ON/GOTO statement&#39;&#39;&#39; &#39;&#39;&#39; &#39;&#39;&#39; &#39;&#39;&#39;Syntax:&#39;&#39;&#39; ON numeric-argument GOTO statement-list &#39;&#39;&#39;Discussion:&#39;&#39;&#39; The ON/GOTO statement transfers program control to a specific statement-label b...</p> <p><b>New page</b></p><div>'''ON/GOTO statement''' '''<br /> '''<br /> '''Syntax:''' ON numeric-argument GOTO statement-list <br /> <br /> '''Discussion:''' The ON/GOTO statement transfers program control to a specific statement-label based on the integer portion of the numeric-argument. <br /> <br /> The numeric-argument may be a single element numeric variable, a numeric array element, a numeric expression, or a numeric function. <br /> <br /> The statement-list contains a minimum of three statement-labels, separated by commas. The integer portion of the numeric-argument determines which statement-label to use, based on a simple set of rules. <br /> <br /> If there are only three statement-labels, the rules are: <br /> <br /> Value of numeric-argument Branch to statement-label<br /> ===========================================================<br /> negative first statement-label<br /> zero second statement-label<br /> positive third statement-label<br /> <br /> If there are more than three labels, they represent positive integer values of the numeric-argument, as follows: <br /> <br /> Value of numeric-argument Branch to statement-label<br /> ===========================================================<br /> negative first statement-label<br /> zero second statement-label<br /> 1 third statement-label<br /> 2 fourth statement-label<br /> 3 fifth statement-label<br /> etc.<br /> <br /> '''Note:''' If the value of the numeric-argument plus 2 is greater than the number of branch labels in the statement-list, program control is transferred to the last branch label in the list. <br /> For example, if the statement-list includes six statement-labels, the sixth label represents the branch-to point for numeric-argument values of 4 and greater. <br /> <br /> See GOTO. <br /> <br /> '''Example 1:''' ON X GOTO 100,200,300,400,500<br /> <br /> In the above example, the integer value of the numeric variable X is used to determine where program control will be transferred. <br /> <br /> For example, if X is less than zero, program control will be transferred to statement label 100. Likewise, if X equals 0, control will be transferred to statement label 200. <br /> <br /> If X equals 1, control will be transferred to statement label 300, and if X equals 2, control will be transferred to statement label 400. <br /> <br /> If X is greater than or equal to 3, program control will be transferred to the last statement-label on the list, in this case statement 500. <br /> <br /> '''Example 2:''' ON CRLIMIT - ARTOTAL GOTO 100,100,200<br /> <br /> In this example, the numeric-argument is the expression: <br /> <br /> CRLIMIT - ARTOTAL<br /> <br /> The integer portion of this expression is used to determine where program control will be transferred. <br /> For example, if the expression yields a negative or zero value (indicating that ARTOTAL is greater or equal to zero), control will be transferred to statement-label 100. <br /> <br /> If the expression yields a value of 1 or more, program control will be transferred to statement-label 200.</div>

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