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<h3 class="section">8.117 <code>ICHAR</code> — Character-to-integer conversion function</h3>
<p><a name="index-ICHAR-704"></a><a name="index-conversion_002c-to-integer-705"></a>
<dl>
<dt><em>Description</em>:<dd><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.
<br><dt><em>Standard</em>:<dd>Fortran 95 and later, with <var>KIND</var> argument Fortran 2003 and later
<br><dt><em>Class</em>:<dd>Elemental function
<br><dt><em>Syntax</em>:<dd><code>RESULT = ICHAR(C [, KIND])</code>
<br><dt><em>Arguments</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="15%"><var>C</var> </td><td valign="top" width="70%">Shall be a scalar <code>CHARACTER</code>, with <code>INTENT(IN)</code>
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>KIND</var> </td><td valign="top" width="70%">(Optional) An <code>INTEGER</code> initialization
expression indicating the kind parameter of the result.
<br></td></tr></table>
<br><dt><em>Return value</em>:<dd>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.
<br><dt><em>Example</em>:<dd>
<pre class="smallexample"> program test_ichar
integer i
i = ichar(' ')
end program test_ichar
</pre>
<br><dt><em>Specific names</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
<br></td></tr><tr align="left"><td valign="top" width="20%"><code>ICHAR(C)</code> </td><td valign="top" width="20%"><code>CHARACTER C</code> </td><td valign="top" width="20%"><code>INTEGER(4)</code> </td><td valign="top" width="25%">Fortran 77 and later
<br></td></tr></table>
<br><dt><em>Note</em>:<dd>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:
<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>
<br><dt><em>See also</em>:<dd><a href="ACHAR.html#ACHAR">ACHAR</a>, <a href="CHAR.html#CHAR">CHAR</a>, <a href="IACHAR.html#IACHAR">IACHAR</a>
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