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Full Discussion: Strtok function....
Operating Systems Linux Strtok function.... Post 302161314 by ennstate on Thursday 24th of January 2008 07:59:21 AM
Old 01-24-2008
Quote:
Originally Posted by Tanvirk
can any help me out y dis program is giving me a segmentation fault.....

#include<stdio.h>
#include<string.h>
int main()
{
char *str="Tanvir/home/root/hello";
const char *d ="/";
char *ret;


ret=strtok(str,d);
if(ret==NULL)
printf("NULL NULL");
else
printf("\n%c",ret);

return 0;
}
In this case str points to location that has the initialized value which could be either ready only or read writable.If it happens to be on read only then the strtok function may not be able to modify the string and so generates the SEGV

You could change that to,
Code:
char  str[]="Tanvir/home/root/hello";

Thanks
Nagarajan G
 

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PRINTF_L(3)						   BSD Library Functions Manual 					       PRINTF_L(3)

NAME
asprintf_l, fprintf_l, printf_l, snprintf_l, sprintf_l, vasprintf_l, vfprintf_l, vprintf_l, vsnprintf_l, vsprintf_l -- formatted output con- version LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <stdio.h> #include <xlocale.h> int asprintf_l(char **ret, locale_t loc, const char *format, ...); int fprintf_l(FILE * restrict stream, locale_t loc, const char * restrict format, ...); int printf_l(locale_t loc, const char * restrict format, ...); int snprintf_l(char * restrict str, size_t size, locale_t loc, const char * restrict format, ...); int sprintf_l(char * restrict str, locale_t loc, const char * restrict format, ...); #include <stdarg.h> #include <xlocale.h> int vasprintf_l(char **ret, locale_t loc, const char *format, va_list ap); int vfprintf_l(FILE * restrict stream, locale_t loc, const char * restrict format, va_list ap); int vprintf_l(locale_t loc, const char * restrict format, va_list ap); int vsnprintf_l(char * restrict str, size_t size, locale_t loc, const char * restrict format, va_list ap); int vsprintf_l(char * restrict str, locale_t loc, const char * restrict format, va_list ap); DESCRIPTION
The printf_l(), fprintf_l(), sprintf_l(), snprintf_l(), asprintf_l(), vprintf_l(), vfprintf_l(), vsprintf_l(), vsnprintf_l(), and vasprintf_l() functions are extended locale versions of the printf(), fprintf(), sprintf(), snprintf(), asprintf(), vprintf(), vfprintf(), vsprintf(), vsnprintf(), and vasprintf() functions, respectively. Refer to their manual pages for details. Also, see xlocale(3) for more information about extended locales. SEE ALSO
printf(3), xlocale(3) BSD
March 11, 2005 BSD
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