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<meta content="text/html; charset=UTF-8" http-equiv="content-type">
<title>RCBasic Scope [RCBasic Doc] </title>
</head>
<body>
<p><h1>SCOPE </h1></p>
<p>
Scope refers to where you are able to access a variable. Basically variables cannot be accessed from outside the scope they are created in. Look at the following:
</p>
<p id="rc_code"><code>
A&nbsp;=&nbsp;<span class="rc_number">5</span>&nbsp;<br>
&nbsp;&nbsp;<br>
<span class="rc_keyword">While</span>&nbsp;A&nbsp;&lt;&nbsp;<span class="rc_number">10</span>&nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;B&nbsp;=&nbsp;<span class="rc_number">1</span>&nbsp;&nbsp;&nbsp;&nbsp;<span class="rc_comment">'----- B is created inside this loop and cannot be accessed outside of this loop </span><br>
&nbsp;&nbsp;&nbsp;A&nbsp;=&nbsp;A&nbsp;+&nbsp;<span class="rc_number">1</span>&nbsp;&nbsp;<span class="rc_comment">'----- A was created before this loop started so it will be able to be used after this loop ends </span><br>
<span class="rc_keyword">Wend</span>&nbsp;<br>
&nbsp;&nbsp;<br>
<span class="rc_keyword">Print</span>&nbsp;B&nbsp;<br>
</code></p>
<p>
The above program WILL NOT COMPILE. That is because the variable B was created inside the scope of the WHILE loop and nothing outside the WHILE loop will be able to access it. The variable A was created outside the WHILE loop so the variable A could be used anywhere in this example. So a variable can go into a deeper scope than where it was created but it cannot go to a lesser scope than where it was created. A scope deepens every time a new block is started. Blocks refer to the code within a loop, within a Function, or within a Sub Routine.
</p>
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