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+<title>The GNU Fortran Compiler: ACCESS</title>
+
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+<div class="header">
+<p>
+Next: <a href="ACHAR.html#ACHAR" accesskey="n" rel="next">ACHAR</a>, Previous: <a href="ABS.html#ABS" accesskey="p" rel="previous">ABS</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
+</div>
+<hr>
+<a name="ACCESS-_002d_002d_002d-Checks-file-access-modes"></a>
+<h3 class="section">8.4 <code>ACCESS</code> &mdash; Checks file access modes</h3>
+<a name="index-ACCESS"></a>
+<a name="index-file-system_002c-access-mode"></a>
+
+<dl compact="compact">
+<dt><em>Description</em>:</dt>
+<dd><p><code>ACCESS(NAME, MODE)</code> checks whether the file <var>NAME</var>
+exists, is readable, writable or executable. Except for the
+executable check, <code>ACCESS</code> can be replaced by
+Fortran 95&rsquo;s <code>INQUIRE</code>.
+</p>
+</dd>
+<dt><em>Standard</em>:</dt>
+<dd><p>GNU extension
+</p>
+</dd>
+<dt><em>Class</em>:</dt>
+<dd><p>Inquiry function
+</p>
+</dd>
+<dt><em>Syntax</em>:</dt>
+<dd><p><code>RESULT = ACCESS(NAME, MODE)</code>
+</p>
+</dd>
+<dt><em>Arguments</em>:</dt>
+<dd><table>
+<tr><td width="15%"><var>NAME</var></td><td width="70%">Scalar <code>CHARACTER</code> of default kind with the
+file name. Trailing blank are ignored unless the character <code>achar(0)</code>
+is present, then all characters up to and excluding <code>achar(0)</code> are
+used as file name.</td></tr>
+<tr><td width="15%"><var>MODE</var></td><td width="70%">Scalar <code>CHARACTER</code> of default kind with the
+file access mode, may be any concatenation of <code>&quot;r&quot;</code> (readable),
+<code>&quot;w&quot;</code> (writable) and <code>&quot;x&quot;</code> (executable), or <code>&quot; &quot;</code> to check
+for existence.</td></tr>
+</table>
+
+</dd>
+<dt><em>Return value</em>:</dt>
+<dd><p>Returns a scalar <code>INTEGER</code>, which is <code>0</code> if the file is
+accessible in the given mode; otherwise or if an invalid argument
+has been given for <code>MODE</code> the value <code>1</code> is returned.
+</p>
+</dd>
+<dt><em>Example</em>:</dt>
+<dd><div class="smallexample">
+<pre class="smallexample">program access_test
+ implicit none
+ character(len=*), parameter :: file = 'test.dat'
+ character(len=*), parameter :: file2 = 'test.dat '//achar(0)
+ if(access(file,' ') == 0) print *, trim(file),' is exists'
+ if(access(file,'r') == 0) print *, trim(file),' is readable'
+ if(access(file,'w') == 0) print *, trim(file),' is writable'
+ if(access(file,'x') == 0) print *, trim(file),' is executable'
+ if(access(file2,'rwx') == 0) &amp;
+ print *, trim(file2),' is readable, writable and executable'
+end program access_test
+</pre></div>
+</dd>
+</dl>
+
+
+
+
+
+
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+</html>