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authoralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
committeralk3pInjection <webmaster@raspii.tech>2024-02-04 16:16:35 +0800
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tree00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gfortran/ICHAR.html
Import stripped Arm GNU Toolchain 13.2.Rel1HEADumineko
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads Change-Id: I7303388733328cd98ab9aa3c30236db67f2e9e9c
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+<head>
+<title>The GNU Fortran Compiler: ICHAR</title>
+
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+<a name="ICHAR"></a>
+<div class="header">
+<p>
+Next: <a href="IDATE.html#IDATE" accesskey="n" rel="next">IDATE</a>, Previous: <a href="IBSET.html#IBSET" accesskey="p" rel="previous">IBSET</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="ICHAR-_002d_002d_002d-Character_002dto_002dinteger-conversion-function"></a>
+<h3 class="section">8.143 <code>ICHAR</code> &mdash; Character-to-integer conversion function</h3>
+<a name="index-ICHAR"></a>
+<a name="index-conversion_002c-to-integer-2"></a>
+
+<dl compact="compact">
+<dt><em>Description</em>:</dt>
+<dd><p><code>ICHAR(C)</code> returns the code for the character in the first character
+position of <code>C</code> in the system&rsquo;s native character set.
+The correspondence between characters and their codes is not necessarily
+the same across different GNU Fortran implementations.
+</p>
+</dd>
+<dt><em>Standard</em>:</dt>
+<dd><p>Fortran 77 and later, with <var>KIND</var> argument Fortran 2003 and later
+</p>
+</dd>
+<dt><em>Class</em>:</dt>
+<dd><p>Elemental function
+</p>
+</dd>
+<dt><em>Syntax</em>:</dt>
+<dd><p><code>RESULT = ICHAR(C [, KIND])</code>
+</p>
+</dd>
+<dt><em>Arguments</em>:</dt>
+<dd><table>
+<tr><td width="15%"><var>C</var></td><td width="70%">Shall be a scalar <code>CHARACTER</code>, with <code>INTENT(IN)</code></td></tr>
+<tr><td width="15%"><var>KIND</var></td><td width="70%">(Optional) A scalar <code>INTEGER</code> constant
+expression indicating the kind parameter of the result.</td></tr>
+</table>
+
+</dd>
+<dt><em>Return value</em>:</dt>
+<dd><p>The return value is of type <code>INTEGER</code> and of kind <var>KIND</var>. If
+<var>KIND</var> is absent, the return value is of default integer kind.
+</p>
+</dd>
+<dt><em>Example</em>:</dt>
+<dd><div class="smallexample">
+<pre class="smallexample">program test_ichar
+ integer i
+ i = ichar(' ')
+end program test_ichar
+</pre></div>
+
+</dd>
+<dt><em>Specific names</em>:</dt>
+<dd><table>
+<thead><tr><th width="20%">Name</th><th width="23%">Argument</th><th width="20%">Return type</th><th width="33%">Standard</th></tr></thead>
+<tr><td width="20%"><code>ICHAR(C)</code></td><td width="23%"><code>CHARACTER C</code></td><td width="20%"><code>INTEGER(4)</code></td><td width="33%">Fortran 77 and later</td></tr>
+</table>
+
+</dd>
+<dt><em>Note</em>:</dt>
+<dd><p>No intrinsic exists to convert between a numeric value and a formatted
+character string representation &ndash; for instance, given the
+<code>CHARACTER</code> value <code>'154'</code>, obtaining an <code>INTEGER</code> or
+<code>REAL</code> value with the value 154, or vice versa. Instead, this
+functionality is provided by internal-file I/O, as in the following
+example:
+</p><div class="smallexample">
+<pre class="smallexample">program read_val
+ integer value
+ character(len=10) string, string2
+ string = '154'
+
+ ! Convert a string to a numeric value
+ read (string,'(I10)') value
+ print *, value
+
+ ! Convert a value to a formatted string
+ write (string2,'(I10)') value
+ print *, string2
+end program read_val
+</pre></div>
+
+</dd>
+<dt><em>See also</em>:</dt>
+<dd><p><a href="ACHAR.html#ACHAR">ACHAR</a>, <br>
+<a href="CHAR.html#CHAR">CHAR</a>, <br>
+<a href="IACHAR.html#IACHAR">IACHAR</a>
+</p></dd>
+</dl>
+
+
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