Language Ccpp Cref Man Toupper.htm

 <TITLE>toupper</TITLE>
<body bgcolor="#ffffcc">
<hr>
<pre>



<h3>TOUPPER(3)          Linux Programmer's Manual          TOUPPER(3)
</h3>

<h3>NAME
</h3>       toupper, tolower - convert letter to upper or lower case

<h3>SYNOPSIS
</h3>       #include &lt;ctype.h&gt;

       int toupper (int c);
       int tolower (int c);

<h3>DESCRIPTION
</h3>       toupper()  converts  the letter c to upper case, if possi-
       ble.

       tolower() converts the letter c to lower case,  if  possi-
       ble.

<h3>RETURN VALUE
</h3>       The  value  returned is that of the converted letter, or c
       if the conversion was not possible.

<h3>CONFORMS TO
</h3>       ANSI - C, BSD 4.3

<h3>BUGS
</h3>       The details of what constitutes an uppercase or  lowercase
       letter  depend  on  the  current locale.  For example, the
       default "C" locale does not know about umlauts, so no con-
       version is done for them.

       In some non - English locales, there are lowercase letters
       with no corresponding  uppercase  equivalent;  the  German
       sharp s is one example.

</pre>
<hr>
<h3>SEE ALSO
</h3><p>
<a href=../EXAMPLES/is_examp.c>isalpha</a>, 
<a href=setlocale.htm>setlocale</a>, 
<a href=locale.htm>locale</a>, 
<pre>






















<h3>GNU                       April 4, 1993                         1
</h3>


</pre>
<P>
<hr>
<p>
<center>
<table border=2 width=80%>
<tr align=center>
<td width=25%>
<a href=../index.htm>Top</a>
</td><td width=25%>
<a href=../master_index.html>Master Index</a>
</td><td width=25%>
<a href=../SYNTAX/keywords.html>Keywords</a>
</td><td width=25%>
<a href=../FUNCTIONS/index.htm>Functions</a>
</td>
</tr>
</table>
</center>
<p>
<hr>

This manual page was brought to you by <i>mjl_man V-2.0</i>

file: /Techref/language/ccpp/Cref/MAN/toupper.htm, 1KB, , updated: 2003/3/20 09:39, local time: 2024/12/4 18:46,

^{18.225.175.230:LOG IN}

©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?

Please DO link to this page! Digg it! / MAKE!

<A HREF="http://sxlist.com/TECHREF/language/ccpp/Cref/MAN/toupper.htm"> toupper</A>

Did you find what you needed?

Welcome to sxlist.com!

Site supported by
sales, advertizing,
& kind contributors
just like you!
Please don't rip/copy
(here's why
Copies of the site on CD
are available at minimal cost.