Sponsored Content
Full Discussion: strtok with while loops
Top Forums Programming strtok with while loops Post 302393163 by Andre_Merzky on Monday 8th of February 2010 04:23:31 AM
Old 02-08-2010
Question

Wouldn't you avoid the strok completely with the following

Code:
#include <ftw.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

char filenames[500][256]; // use your local file length limit
int  filecount = 0;

int list(const char *name, const struct stat *status, int type)
{
  if( (type == FTW_F) && strstr(name, ".txt") && !strstr(name, ".c") )
  {
    snprintf (filenames[filecount], 255, "%s", name);
    filecount++;
  }

  return 0;
}

int main(void)
{ 
  // recursively buffer file names in directory
  if ( 0 != ftw ("/path-to-directory", list, 1) )
  {
    fprintf (stderr, "error in ftw: %s\n", strerror (errno));
    return (-1);
  }

  
  for ( int i = 0; i < filecount; i++ )
  {
    printf ("%3d :  %s\n", i, filenames[i]);
  }

  return 0;
}

Much easier to read, IMHO.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

While Loops

I'm trying to create a loop that will prompt the user for 15 values, not forcing them to enter all 15. If the user enters through one or more of the prompts the null value needs to be converted to 0, otherwise set the parameter = to the value entered: ex. Please enter file no #1: 17920 ... (4 Replies)
Discussion started by: vdc
4 Replies

2. Programming

better way than strtok?

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
7 Replies

3. UNIX for Dummies Questions & Answers

two loops

Hi, how can I use "for" to have two loops : this is my script : for i in (A B C) do for j in (a b c) do echo $i$j done done #End I want to print out Aa Ab Ac .... But I have error message : syntax error at line 1 : `(' unexpected Many thanks before. How should I use "for" ?? (2 Replies)
Discussion started by: big123456
2 Replies

4. Linux

Strtok function....

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
3 Replies

5. Programming

Regardign strtok() output directing to 2-D string array

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
3 Replies

6. Shell Programming and Scripting

strtok equivalent in perl

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

7. Programming

How to use strtok twice in the same program?

string str1(" 1 2 3 4 512543 "); string str2; if(str2.empty()) str2=str1; cout << "str2:" <<str2 <<endl; p1=strtok((char *)str1.c_str()," "); while(p1) { ... (3 Replies)
Discussion started by: sathishkmrv
3 Replies

8. Shell Programming and Scripting

Loops

Hi All, I am very new to Shell scripting. I read basic scripting manual. But i didn't understand the code. Please tell the meaning of the below code: while getopts "F:f:R:r:C:c:" opt 2>/dev/null do case ${opt} in F|f) FREQUENCY_MODE=$OPTARG;; ... (3 Replies)
Discussion started by: pdathu
3 Replies

9. Programming

strtok() gives segmentation fault!!

#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. Homework & Coursework Questions

If and Loops

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: In this script you will take a directory as input from the user and change the end of line sequence from a Unix... (1 Reply)
Discussion started by: Pcarson
1 Replies
FBB::mlm(3bobcat)					      OFoldStream manipulator						 FBB::mlm(3bobcat)

NAME
FBB::mlm - Manipulator modifying left margins of OFoldStream objects SYNOPSIS
#include <bobcat/ofoldstream> or #include <bobcat/ofoldstreambuf> Linking option: -lbobcat DESCRIPTION
The mlm class implements a manipulator that can be inserted into OFoldStream objects to modify the stream's left margin by a requested amount. The request cannot result in a negative left margin value. If a negative left margin would be the arithmetic result of the request then left margin 0 will silently be used. Depending on the tab-setting of the OFoldStream the inserted value represents the number of blank space characters or the number of tab-characters that will be added to the left margin. The request will be processed at the next newline character or std::flush or std::endl manipulator that is inserted into the stream. If a line is still empty once an mlm object and a flush manipulator are inserted into the stream then the new left margin will be effective at the next word inserted into that line (cf., the example section below) A bad_cast exception is thrown when the manipulator is inserted into an ostream that is not using a OFoldStreambuf buffer. NAMESPACE
FBB All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB. INHERITS FROM
- CONSTRUCTOR
o mlm(int addValue): The standard copy constructor is available. MEMBER FUNCTIONS
There are no public or protected member functions in this class. EXAMPLE
#include <iostream> #include <bobcat/ofoldstream> using namespace std; using namespace FBB; int main() { OFoldStream out(cout, 0, 80); out << "hello world (left margin is 0)" << mlm(4) << " " "this uses a 4 character wide left margin " << mlm(-10) << flush << "left margin -6 changed to 0, active on this line "; return 0; } FILES
bobcat/mlm - defines the class interface SEE ALSO
bobcat(7), manipulators(3bobcat), lm(3bobcat), ofoldstream(3bobcat) BUGS
None Reported. DISTRIBUTION FILES
o bobcat_3.01.00-x.dsc: detached signature; o bobcat_3.01.00-x.tar.gz: source archive; o bobcat_3.01.00-x_i386.changes: change log; o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries; o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages; o http://sourceforge.net/projects/bobcat: public archive location; BOBCAT
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'. COPYRIGHT
This is free software, distributed under the terms of the GNU General Public License (GPL). AUTHOR
Frank B. Brokken (f.b.brokken@rug.nl). libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::mlm(3bobcat)
All times are GMT -4. The time now is 08:47 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy