<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns:MadCap="http://www.madcapsoftware.com/Schemas/MadCap.xsd" MadCap:lastBlockDepth="6" MadCap:lastHeight="94" MadCap:lastWidth="853" MadCap:disableMasterStylesheet="true" MadCap:tocPath="" MadCap:InPreviewMode="false" MadCap:PreloadImages="false" MadCap:RuntimeFileType="Topic" MadCap:TargetType="WebHelp" lang="en-us" xml:lang="en-us" MadCap:PathToHelpSystem="../../../" MadCap:HelpSystemFileName="Default.xml" MadCap:SearchType="Stem"> <head><title>LET</title> <link href="../../Resources/Stylesheets/BSE_Help.css" rel="stylesheet" /> <script src="../../SkinSupport/MadCapAll.js" type="text/javascript"> </script> </head> <body> <h1 class="code">LET</h1> <div class="ImagePlusCaption"> <div class="Col2"> <p> <img src="../../graphics/pgm_icon1.gif" border="0" alt="BS1 icon" title="BS1 icon" /> </p> </div> <p style="text-align: right;"> </p> </div> <p class="clear"> </p> <p> </p> <p class="PlainText">Syntax: {<span class="keyword_in_text">LET</span>}<i>Variable </i>=<i> Value</i></p> <h2>Function</h2> <p class="PlainText">Sets <i>Variable</i> equal to the value of <i>Value</i>. </p> <ul> <li value="1"><b><i>Variable</i></b> is a variable/constant/expression (0-65535).</li> <li value="2"><b><i>Value</i></b> is a variable which will be set equal to <i>Value</i>. </li> </ul> <h2>Explanation<br /></h2> <p class="PlainText"><span class="keyword_in_text">LET</span> is an optional instruction for the BASIC Stamp 1 that can be used with variable assignment statements, such as A = 5 and B = A + 2, etc. This instruction is not required and only exits on the BASIC Stamp 1. <span class="keyword_in_text">LET</span> was a commonly used command in early forms of BASIC, and was originally included in the BS1 command set to accommodate programmers from that generation. Parallax recommends that all new BASIC Stamp 1 programs use assignment statements without the <span class="keyword_in_text">LET</span> command.</p> <p class="PlainText">The example below demonstrates the use of <span class="keyword_in_text">LET</span> in assignment statements. Note that the Lunchtime and Dinnertime routines do essentially the same type of thing, but the Dinnertime approach is recommended.</p><pre class="BScode" xml:space="preserve">' {$STAMP BS1} ' {$PBASIC 1.0} ' {$STAMP BS1} SYMBOL salad = B1 SYMBOL bread = B2 SYMBOL soup = B3 SYMBOL lunch = B4 SYMBOL dinner = B5 Lunchtime: LET salad = 3 LET bread = 1 LET soup = 4 lunch = salad + bread + soup DEBUG "Lunch = $", #lunch, "plus local tax.", CR Dinnertime: salad = 4 bread = 2 soup = 5 dinner = salad + bread + soup DEBUG "Dinner = $",#dinner, "plus local tax.", CR </pre> <div class="Col2"> <div class="MasterFoot"> <p MadCap:conditions="BSEconditions.BSEWebHelp (Primary)-INCLUDE"><a href="../../HomeTopics/HomePage.htm">Go to Welcome page</a> </p> </div> </div> <div class="Col2"> <div class="MasterFoot"> <p style="text-align: right;"><span class="ContactInfoProjectName">BASIC Stamp Help</span> <![CDATA[ ]]><span class="ContactInfoVersion#">Version 2.5.4</span> <![CDATA[ ]]></p> <p style="text-align: right;">Copyright © <span class="ContactInfoCompanyName">Parallax Inc.</span></p> <p style="text-align: right;"><span class="SystemShortDate">8/8/2012</span> </p> </div> </div> <script type="text/javascript">/* <![CDATA[ */ var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-285614-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); /* ]]> */</script> <script type="text/javascript" src="../../SkinSupport/MadCapBodyEnd.js"> </script> </body> </html>