GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
CTYPE(3) FreeBSD Library Functions Manual CTYPE(3)

digittoint, isalnum, isalpha, isascii, isblank, iscntrl, isdigit, isgraph, ishexnumber, isideogram, islower, isnumber, isphonogram, isprint, ispunct, isrune, isspace, isspecial, isupper, isxdigit, toascii, tolower, toupper
character classification functions

Standard C Library (libc, -lc)

#include <ctype.h>

int
digittoint(int c);

int
isalnum(int c);

int
isalpha(int c);

int
isascii(int c);

int
iscntrl(int c);

int
isdigit(int c);

int
isgraph(int c);

int
ishexnumber(int c);

int
isideogram(int c);

int
islower(int c);

int
isnumber(int c);

int
isphonogram(int c);

int
isspecial(int c);

int
isprint(int c);

int
ispunct(int c);

int
isrune(int c);

int
isspace(int c);

int
isupper(int c);

int
isxdigit(int c);

int
toascii(int c);

int
tolower(int c);

int
toupper(int c);

The above functions perform character tests and conversions on the integer c. They are available as macros, defined in the include file <ctype.h>, or as true functions in the C library. See the specific manual pages for more information.

digittoint(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), isideogram(3), islower(3), isphonogram(3), isprint(3), ispunct(3), isrune(3), isspace(3), isspecial(3), isupper(3), isxdigit(3), toascii(3), tolower(3), toupper(3), wctype(3), ascii(7)

These functions, except for digittoint(), isascii(), ishexnumber(), isideogram(), isnumber(), isphonogram(), isrune(), isspecial() and toascii(), conform to ISO/IEC 9899:1990 (“ISO C90”).
March 30, 2004 FreeBSD 13.1-RELEASE

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.