aarch64-linux-gnu-5.1/share/doc/gfortran/ICHAR.html - toolchains/linux-x86/gcc - Git at Google

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
 <!-- Copyright (C) 1999-2015 Free Software Foundation, Inc.

 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
 any later version published by the Free Software Foundation; with the
 Invariant Sections being "Funding Free Software", the Front-Cover
 Texts being (a) (see below), and with the Back-Cover Texts being (b)
 (see below).  A copy of the license is included in the section entitled
 "GNU Free Documentation License".

 (a) The FSF's Front-Cover Text is:

 A GNU Manual

 (b) The FSF's Back-Cover Text is:

 You have freedom to copy and modify this GNU Manual, like GNU
      software.  Copies published by the Free Software Foundation raise
      funds for GNU development. -->
 <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
 <head>
 <title>The GNU Fortran Compiler: ICHAR</title>

 <meta name="description" content="The GNU Fortran Compiler: ICHAR">
 <meta name="keywords" content="The GNU Fortran Compiler: ICHAR">
 <meta name="resource-type" content="document">
 <meta name="distribution" content="global">
 <meta name="Generator" content="makeinfo">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <link href="index.html#Top" rel="start" title="Top">
 <link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
 <link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
 <link href="IDATE.html#IDATE" rel="next" title="IDATE">
 <link href="IBSET.html#IBSET" rel="prev" title="IBSET">
 <style type="text/css">
 <!--
 a.summary-letter {text-decoration: none}
 blockquote.smallquotation {font-size: smaller}
 div.display {margin-left: 3.2em}
 div.example {margin-left: 3.2em}
 div.indentedblock {margin-left: 3.2em}
 div.lisp {margin-left: 3.2em}
 div.smalldisplay {margin-left: 3.2em}
 div.smallexample {margin-left: 3.2em}
 div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
 div.smalllisp {margin-left: 3.2em}
 kbd {font-style:oblique}
 pre.display {font-family: inherit}
 pre.format {font-family: inherit}
 pre.menu-comment {font-family: serif}
 pre.menu-preformatted {font-family: serif}
 pre.smalldisplay {font-family: inherit; font-size: smaller}
 pre.smallexample {font-size: smaller}
 pre.smallformat {font-family: inherit; font-size: smaller}
 pre.smalllisp {font-size: smaller}
 span.nocodebreak {white-space:nowrap}
 span.nolinebreak {white-space:nowrap}
 span.roman {font-family:serif; font-weight:normal}
 span.sansserif {font-family:sans-serif; font-weight:normal}
 ul.no-bullet {list-style: none}
 -->
 </style>


 </head>

 <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
 <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="prev">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">9.134 <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 95 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) An <code>INTEGER</code> initialization
 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>
 <tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
 <tr><td width="20%"><code>ICHAR(C)</code></td><td width="20%"><code>CHARACTER C</code></td><td width="20%"><code>INTEGER(4)</code></td><td width="25%">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>, <a href="CHAR.html#CHAR">CHAR</a>, <a href="IACHAR.html#IACHAR">IACHAR</a>
 </p>
 </dd>
 </dl>


 <hr>
 <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="prev">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>


 </body>
 </html>
	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<!-- Copyright (C) 1999-2015 Free Software Foundation, Inc.

	Permission is granted to copy, distribute and/or modify this document
	under the terms of the GNU Free Documentation License, Version 1.3 or
	any later version published by the Free Software Foundation; with the
	Invariant Sections being "Funding Free Software", the Front-Cover
	Texts being (a) (see below), and with the Back-Cover Texts being (b)
	(see below). A copy of the license is included in the section entitled
	"GNU Free Documentation License".

	(a) The FSF's Front-Cover Text is:

	A GNU Manual

	(b) The FSF's Back-Cover Text is:

	You have freedom to copy and modify this GNU Manual, like GNU
	software. Copies published by the Free Software Foundation raise
	funds for GNU development. -->
	<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
	<head>
	<title>The GNU Fortran Compiler: ICHAR</title>

	<meta name="description" content="The GNU Fortran Compiler: ICHAR">
	<meta name="keywords" content="The GNU Fortran Compiler: ICHAR">
	<meta name="resource-type" content="document">
	<meta name="distribution" content="global">
	<meta name="Generator" content="makeinfo">
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<link href="index.html#Top" rel="start" title="Top">
	<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
	<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
	<link href="Intrinsic-Procedures.html#Intrinsic-Procedures" rel="up" title="Intrinsic Procedures">
	<link href="IDATE.html#IDATE" rel="next" title="IDATE">
	<link href="IBSET.html#IBSET" rel="prev" title="IBSET">
	<style type="text/css">
	<!--
	a.summary-letter {text-decoration: none}
	blockquote.smallquotation {font-size: smaller}
	div.display {margin-left: 3.2em}
	div.example {margin-left: 3.2em}
	div.indentedblock {margin-left: 3.2em}
	div.lisp {margin-left: 3.2em}
	div.smalldisplay {margin-left: 3.2em}
	div.smallexample {margin-left: 3.2em}
	div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
	div.smalllisp {margin-left: 3.2em}
	kbd {font-style:oblique}
	pre.display {font-family: inherit}
	pre.format {font-family: inherit}
	pre.menu-comment {font-family: serif}
	pre.menu-preformatted {font-family: serif}
	pre.smalldisplay {font-family: inherit; font-size: smaller}
	pre.smallexample {font-size: smaller}
	pre.smallformat {font-family: inherit; font-size: smaller}
	pre.smalllisp {font-size: smaller}
	span.nocodebreak {white-space:nowrap}
	span.nolinebreak {white-space:nowrap}
	span.roman {font-family:serif; font-weight:normal}
	span.sansserif {font-family:sans-serif; font-weight:normal}
	ul.no-bullet {list-style: none}
	-->
	</style>


	</head>

	<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
	<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="prev">IBSET</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a>   [<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">9.134 <code>ICHAR</code> — 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’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 95 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) An <code>INTEGER</code> initialization
	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>
	<tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
	<tr><td width="20%"><code>ICHAR(C)</code></td><td width="20%"><code>CHARACTER C</code></td><td width="20%"><code>INTEGER(4)</code></td><td width="25%">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 – 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>, <a href="CHAR.html#CHAR">CHAR</a>, <a href="IACHAR.html#IACHAR">IACHAR</a>
	</p>
	</dd>
	</dl>



	<hr>
	<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="prev">IBSET</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a>   [<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>



	</body>
	</html>