summaryrefslogtreecommitdiff
path: root/reference/C/SYNTAX/include_preprocessor.html
blob: cd88707a4c27c0523b33868e0e7a125059eddaee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
<title>include preprocessor</title>
<head>
<script language="JavaScript">
</script>
</head>
<body bgcolor="#ffffcc">
<hr>
<center>
<h1>include preprocessor.</h1>
</center>
<hr>
The include preprocessor will add source code to your existing source. This 
is used to include <i>header</i> files that contain function declarations.
For example:<p>
<pre>
	#include &lt;stdio.h&gt;
	main()
	printf("hi peeps");
	}
</pre>
The <i>printf</i> function declaration is held in stdio.h<p>
There are two ways of defining the include files location.
<ul>
<li>&lt;&gt;says to the preprocessor that the file is in the system libraries.
<pre>
	#include &lt;stdio.h&gt;
</pre>
	
<li>&quot;&quot;means that this is a user defined file. Absolute or relative
paths may be defined.
<pre>
	#include &quot;myheaders.h&quot;
	#include &quot;/usr/home/leslim/myheaders.h&quot;
</pre>
</ul>

<p>

<hr>
<p>
<center>
<table border=2 width="80%" bgcolor="ivory">
<tr align=center>
<td width="25%">
<a href="../cref.html">                  Top</a>
</td><td width="25%">
<a href="../master_index.html">          Master Index</a>
</td><td width="25%">
<a href="keywords.html">                 Keywords</a>
</td><td width="25%">
<a href="../FUNCTIONS/funcref.htm">      Functions</a>
</td>
</tr>
</table>
</center>
<p>
<hr>
<address>Martin Leslie 
</address><p>
</body>
</html>