10-07-2008
10 More Discussions You Might Find Interesting
1. Programming
Hi all,
Right now I'm using this but it seems to be a hack:
if (prefix(arg, "mark=")) {
for (markid = strtok(args,"="); markid; markid=strtok((char *)NULL, "=")) {
basically the user passes "mark=ny" to the command. I want to be able to extract "ny" from that... (7 Replies)
Discussion started by: annie
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2. Linux
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
... (3 Replies)
Discussion started by: Tanvirk
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3. Programming
Hi,
I just wrote a program in C to split a comma seperated string in to group of strings using strtok() function. The code is:
int main()
{
char *temp;//not used here but basically we extract one string after another using strtok() and assign to a string pointer defined like this.
... (3 Replies)
Discussion started by: SankarV
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4. Shell Programming and Scripting
Hi All,
Is their any equivalent for strtok (in c) to use in perl script.
Thanks in advance.
JS (1 Reply)
Discussion started by: jisha
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
i want to write a script that executes a program (exec?) .
this program then requires a filename as input.
how do i give it this input in the script so the program will be complete run and close by the script.
e.g.
exec prog.exe
program then asks for filename
"enter filename:"... (1 Reply)
Discussion started by: tuathan
1 Replies
6. Programming
Why is line (null) after the first while loop run? (keyword does jump to the next word.)
#include <ftw.h>
#include <stdio.h>
#include <string.h>
char filenames = "";
int list(const char *name, const struct stat *status, int type)
{
if( (type == FTW_F) && strstr(name, ".txt") &&... (3 Replies)
Discussion started by: cyler
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7. Programming
I wrote a simple program that generates a random word 10,000,000 times.
I wrote it in python, then in C++ and compared the two completion times. The python script was faster! Is that normal? Why would the python script be faster? I was under the impression that C++ was faster. What are some of... (2 Replies)
Discussion started by: cbreiny
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8. Homework & Coursework Questions
Long story short: I'm working inside of a Unix SSH under a bash shell. I have to code a C program that generates a random number. Then I have to call the compiled C program with a Perl program to run the C program 20 times and put all the generated random #s into a text file, then print that text... (1 Reply)
Discussion started by: jdkirby
1 Replies
9. Programming
#include<iostream.h>
#include<string>
#include<stdio.h>
int main()
{
char *cmd="delete backup backup-iso image a.iso b.iso c.iso d.iso";
char *tokenized_cmd,*sub_cmd;
sub_cmd=strstr(cmd,"image");
tokenized_cmd=strtok(sub_cmd," ");
... (3 Replies)
Discussion started by: ashwini.engr07
3 Replies
10. Shell Programming and Scripting
I created a program, so a kid can practice there math on it. It dispenses varies math problems and the kid must input an answer. I also want it to grade the work they have done, but I can't find the best place for it to print out the grade.
I have:
if ( $response =~ m/^/ ) {
$user_wants_to_quit... (1 Reply)
Discussion started by: germany1517
1 Replies
STRTOK(3) BSD Library Functions Manual STRTOK(3)
NAME
strtok, strtok_r -- string tokens
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
char *
strtok(char *restrict str, const char *restrict sep);
char *
strtok_r(char *restrict str, const char *restrict sep, char **restrict lasts);
DESCRIPTION
This interface is obsoleted by strsep(3).
The strtok() function is used to isolate sequential tokens in a null-terminated string, str. These tokens are separated in the string by at
least one of the characters in sep. The first time that strtok() is called, str should be specified; subsequent calls, wishing to obtain
further tokens from the same string, should pass a null pointer instead. The separator string, sep, must be supplied each time, and may
change between calls.
The implementation will behave as if no library function calls strtok().
The strtok_r() function is a reentrant version of strtok(). The context pointer last must be provided on each call. The strtok_r() function
may also be used to nest two parsing loops within one another, as long as separate context pointers are used.
The strtok() and strtok_r() functions return a pointer to the beginning of each subsequent token in the string, after replacing the token
itself with a NUL character. When no more tokens remain, a null pointer is returned.
EXAMPLES
The following uses strtok_r() to parse two strings using separate contexts:
char test[80], blah[80];
char *sep = "\/:;=-";
char *word, *phrase, *brkt, *brkb;
strcpy(test, "This;is.a:test:of=the/string\tokenizer-function.");
for (word = strtok_r(test, sep, &brkt);
word;
word = strtok_r(NULL, sep, &brkt))
{
strcpy(blah, "blah:blat:blab:blag");
for (phrase = strtok_r(blah, sep, &brkb);
phrase;
phrase = strtok_r(NULL, sep, &brkb))
{
printf("So far we're at %s:%s
", word, phrase);
}
}
SEE ALSO
memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), wcstok(3)
STANDARDS
The strtok() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
AUTHORS
Wes Peters, Softweyr LLC: <wes@softweyr.com>
Based on the FreeBSD 3.0 implementation.
BUGS
The System V strtok(), if handed a string containing only delimiter characters, will not alter the next starting point, so that a call to
strtok() with a different (or empty) delimiter string may return a non-NULL value. Since this implementation always alters the next starting
point, such a sequence of calls would always return NULL.
BSD
November 27, 1998 BSD