STRLEN(3) BSD Library Functions Manual STRLEN(3)NAME
strlen, strnlen -- find length of string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
size_t
strlen(const char *s);
size_t
strnlen(const char *s, size_t maxlen);
DESCRIPTION
The strlen() function computes the length of the string s. The strnlen() function attempts to compute the length of s, but never scans
beyond the first maxlen bytes of s.
RETURN VALUES
The strlen() function returns the number of characters that precede the terminating NUL character. The strnlen() function returns either the
same result as strlen() or maxlen, whichever is smaller.
SEE ALSO string(3), wcslen(3), wcswidth(3)STANDARDS
The strlen() function conforms to ISO/IEC 9899:1990 (``ISO C90''). The strnlen() function conforms to IEEE Std 1003.1-2008 (``POSIX.1'').
BSD February 28, 2009 BSD
Check Out this Related Man Page
STRNLEN(3) Linux Programmer's Manual STRNLEN(3)NAME
strnlen - determine the length of a fixed-size string
SYNOPSIS
#include <string.h>
size_t strnlen(const char *s, size_t maxlen);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
strnlen():
Since glibc 2.10:
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
Before glibc 2.10:
_GNU_SOURCE
DESCRIPTION
The strnlen() function returns the number of bytes in the string pointed to by s, excluding the terminating null byte (' '), but at most
maxlen. In doing this, strnlen() looks only at the first maxlen bytes at s and never beyond s+maxlen.
RETURN VALUE
The strnlen() function returns strlen(s), if that is less than maxlen, or maxlen if there is no null byte (' ') among the first maxlen
bytes pointed to by s.
CONFORMING TO
POSIX.1-2008.
SEE ALSO strlen(3)COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2012-05-10 STRNLEN(3)
Hi ! All,
I have to delete first 2 characters from string. How its possible?
Like string value is "2001". I required output as "01"
Plaese help me.
Nitin (4 Replies)
hello,
i have a problem with strlen. I have written this:
for(y=13,z=0; cInBuf!=' ';y++)
{
cBuf=cInBuf;
z++;
}
len = strlen(cBuf);
out=len/2;
fprintf(outfile,"F%i",out);
If strlen is e.g. 22, it write F22. I want to write F2F2.
How can i do this?... (5 Replies)
Hello,
Just a little problem with the ksh function : strlen
I want to use this function in this little ksh program :
while read line ; do
TOTO=$line
TOTONB=strlen($TOTO)
echo $TOTONB (3 Replies)
Hi,
I am using xlC compiler. The compilation goes fine but at the time of linking it gives the following error
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
ld: 0711-317 ERROR: Undefined symbol: .u_strlen_2_6
ld: 0711-317 ERROR: Undefined symbol:... (0 Replies)
In a declaration, I have:
const char comment_begin = "<!--";
const char comment_end = "-->";
const int comment_begin_len = strlen(comment_begin);
const int comment_end_len = strlen(comment_end);
When I compile, I get the warnings:
emhttpc.c:64: warning: initializer element is not... (10 Replies)
I have been getting some flack recently for my use of strlen() and strnlen(). Honestly I have always just taken their functionality for granted as being the easiest way of getting the length of a string. Is it really so much better to do pointer arithmetic? What am I gaining besides more... (3 Replies)
My OS (Debian) and gcc use the UTF-8 locale. This code says that the char size is 1 byte but the size of 'a' is really 4 bytes.
int main(void)
{
setlocale(LC_ALL, "en_US.UTF-8");
printf("Char size: %i\nSize of char 'a': %i\nSize of Euro sign '€': %i\nLength of Euro sign: %i\n",... (8 Replies)
Hello,
This function was copied into my code, which was compiled without error/warning, but when executed there is always Segmentation fault at the end after the output (which seems correct!):
void get_hashes(unsigned int hash, unsigned char *in)
{
unsigned char *str = in;
int pos =... (7 Replies)
greetings,
pretty new to php and i think i might be missing some fundamental limitation of isset. i have two php scripts below that are executed by crond, one using --host X and one that does not. and below that are three different attempts at generating a command line that will be executed. the... (8 Replies)