arduino-0018-windows
This commit is contained in:
parent
157fd6f1a1
commit
f39fc49523
5182 changed files with 950586 additions and 0 deletions
119
arduino-0018-windows/reference/Braces.html
Normal file
119
arduino-0018-windows/reference/Braces.html
Normal file
|
|
@ -0,0 +1,119 @@
|
|||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||||
<html>
|
||||
<head>
|
||||
<title>Arduino - Braces </title>
|
||||
<link rel='stylesheet' href='arduino.css' type='text/css' />
|
||||
<meta name="verify-v1" content="TtxFIEJAB6zdJ509wLxjnapQzKAMNm9u0Wj4ho6wxIY=" />
|
||||
</head>
|
||||
<body>
|
||||
<div id="page">
|
||||
<!--PageHeaderFmt-->
|
||||
<div id="pageheader">
|
||||
<div class="title"><a href="http://www.arduino.cc"/>Arduino</a></div>
|
||||
<div class="search">
|
||||
<!-- SiteSearch Google -->
<FORM method=GET action="http://www.google.com/search">
<input type=hidden name=ie value=UTF-8>
<input type=hidden name=oe value=UTF-8>
<INPUT TYPE=text name=q size=25 maxlength=255 value="">
<INPUT type=submit name=btnG VALUE="search">
<input type=hidden name=domains value="http://www.arduino.cc/">
|
||||
<input type=hidden name=sitesearch value="http://www.arduino.cc/">
|
||||
</FORM>
<!-- SiteSearch Google -->
|
||||
</div>
|
||||
</div>
|
||||
<!--/PageHeaderFmt-->
|
||||
<!--PageLeftFmt-->
|
||||
<div id="pagenav" style="text-align: right">
|
||||
<div style="float: left;">
|
||||
<p><a class='wikilink' href='http://arduino.cc/en/Main/Buy'>Buy</a>
|
||||
|
|
||||
<a class='wikilink' href='http://arduino.cc/en/Main/Software'>Download</a>
|
||||
|
|
||||
<a class='wikilink' href='Guide_index.html'>Getting Started</a>
|
||||
|
|
||||
<a class='wikilink' href='http://arduino.cc/en/Tutorial/HomePage'>Learning</a>
|
||||
|
|
||||
<a class='wikilink' href='index.html'>Reference</a>
|
||||
|
|
||||
<a class='wikilink' href='http://arduino.cc/en/Main/Hardware'>Hardware</a>
|
||||
|
|
||||
<a class='wikilink' href='FAQ.html'>FAQ</a>
|
||||
</p>
|
||||
<p class='vspace'></p>
|
||||
|
||||
</div>
|
||||
<a class="urllink" href="http://www.arduino.cc/blog/" rel="nofollow">Blog »</a> |
|
||||
<a class="urllink" href="http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl" rel="nofollow">Forum »</a> |
|
||||
<a class="urllink" href="http://www.arduino.cc/playground/" rel="nofollow">Playground »</a>
|
||||
</div>
|
||||
<!--/PageLeftFmt-->
|
||||
<div id="pagetext">
|
||||
<!--PageText-->
|
||||
<div id='wikitext'>
|
||||
<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> (<a class='wikilink' href='Extended.html'>extended</a>) | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
|
||||
</p>
|
||||
<p class='vspace'></p><h2>{} Curly Braces</h2>
|
||||
<p>Curly braces (also referred to as just "braces" or as "curly brackets") are a major part of the C programming language. They are used in several different constructs, outlined below, and this can sometimes be confusing for beginners.
|
||||
</p>
|
||||
<p class='vspace'></p><p>An opening curly brace "{" must always be followed by a closing curly brace "}". This is a condition that is often referred to as the braces being balanced. The Arduino IDE (integrated development environment) includes a convenient feature to check the balance of curly braces. Just select a brace, or even click the insertion point immediately following a brace, and its logical companion will be highlighted.
|
||||
</p>
|
||||
<p class='vspace'></p><p>At present this feature is slightly buggy as the IDE will often find (incorrectly) a brace in text that has been "commented out."
|
||||
</p>
|
||||
<p class='vspace'></p><p>Beginning programmers, and programmers coming to C from the BASIC language often find using braces confusing or daunting. After all, the same curly braces replace the RETURN statement in a subroutine (function), the ENDIF statement in a conditional and the NEXT statement in a FOR loop.
|
||||
</p>
|
||||
<p class='vspace'></p><p>Because the use of the curly brace is so varied, it is good programming practice to type the closing brace immediately after typing the opening brace when inserting a construct which requires curly braces. Then insert some carriage returns between your braces and begin inserting statements. Your braces, and your attitude, will never become unbalanced.
|
||||
</p>
|
||||
<p class='vspace'></p><p>Unbalanced braces can often lead to cryptic, impenetrable compiler errors that can sometimes be hard to track down in a large program. Because of their varied usages, braces are also incredibly important to the syntax of a program and moving a brace one or two lines will often dramatically affect the meaning of a program.
|
||||
</p>
|
||||
<p class='vspace'></p><h4><strong>The main uses of curly braces</strong></h4>
|
||||
<h4>Functions</h4>
|
||||
<pre> void myfunction(datatype argument){
|
||||
statements(s)
|
||||
}
|
||||
</pre>
|
||||
<p class='vspace'></p><h4>Loops</h4>
|
||||
<pre> while (boolean expression)
|
||||
{
|
||||
statement(s)
|
||||
}
|
||||
|
||||
do
|
||||
{
|
||||
statement(s)
|
||||
} while (boolean expression);
|
||||
|
||||
for (initialisation; termination condition; incrementing expr)
|
||||
{
|
||||
statement(s)
|
||||
}
|
||||
</pre>
|
||||
<p class='vspace'></p><h4>Conditional statements</h4>
|
||||
<p class='vspace'></p><pre> if (boolean expression)
|
||||
{
|
||||
statement(s)
|
||||
}
|
||||
|
||||
else if (boolean expression)
|
||||
{
|
||||
statement(s)
|
||||
}
|
||||
else
|
||||
{
|
||||
statement(s)
|
||||
}
|
||||
</pre>
|
||||
<p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
|
||||
</p>
|
||||
<p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
|
||||
</p>
|
||||
<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
|
||||
</p>
|
||||
<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
|
||||
<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
|
||||
</p>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
<!--PageFooterFmt-->
|
||||
<div id="pagefooter">
|
||||
<a href='#'>Edit Page</a> | <a href='#'>Page History</a> | <a href='#' target='_blank'>Printable View</a> | <a href='http://arduino.cc/en/Site/AllRecentChanges'>All Recent Site Changes</a>
|
||||
</div>
|
||||
<!--/PageFooterFmt-->
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
Reference in a new issue