Related
Situation as following:
In the first line input a string, then the following lines are 'command'. 2 types of command 'p' and 's', 'p' means printing the string, 's' means substitution.
e.g. Input a string aaabbbcccqwerdd then input sbqwerbkkk
(s means substitution, b acts as a delimiter, therefore it means replacing qwer in the string with kkk)
The expected result should be aaabbbccckkkdd, but instead I got aaabbbccckkkrdd
Any help?
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXLEN 1023
int main() {
char str[MAXLEN];
scanf("%s", str);
char command[MAXLEN];
while (scanf("%s", command) != EOF) {
if (command[0] == 'p') {
printf("%s\n", str); }
else if (command[0] == 's') {
char delimiter[] = {"0"};
strncpy(delimiter, command+1, 1);
char *a = command;
a = strtok(command, delimiter);
a = strtok(NULL, delimiter);
char *b = command;
b = strtok(NULL, delimiter);
int alength = strlen(a);
int blength = strlen(b);
char *bereplaced = strstr(str, a);
if (bereplaced == NULL) {
continue; }
int aindex = bereplaced - str;
strncpy(str + aindex, b, blength);
}
}
return 0;
}
Many things can go wrong here but the main issue is copying from from source string on to itself, there can be memory overlap. Instead declare a new buffer for the result for find/replace operation.
You can define a separate find_replace function as follows:
char* find_replace(const char* src, const char* find, const char* replace)
{
if (!src) return NULL;
char* find_ptr = strstr(src, find); if (!find_ptr) return NULL;
int find_start = find_ptr - src;
int find_length = strlen(find);
char* result = malloc(strlen(src) + strlen(replace) + 1);
strncpy(result, src, find_start);
strcpy(result + find_start, replace);
strcat(result, find_ptr + find_length);
return result;
}
int main()
{
char source[] = "aaabbbcccqwerdd";
char command[] = "sbqwerbkkk";
if (command[0] != 's') return 0;
char delimiter[] = { "0" };
delimiter[0] = command[1];
char* find = strtok(command, delimiter); if (!find) return 0;
find = strtok(NULL, delimiter); if (!find) return 0;
char* replace = strtok(NULL, delimiter); if (!replace) return 0;
char* result = find_replace(source, find, replace);
if (!result) return 0;
printf("%s\n", result);
free(result);
return 0;
}
Here is another solution. It does the substitution directly into the input string by:
Use memmove to move the trailing part of the orginal string to its final location
Use strncpy to copy the substitute substring to its final location
Like:
#include <stdio.h>
#include <string.h>
#define MAXLEN 1023
int main(void)
{
char str[MAXLEN] = "aaabbbcccqwerdd";
char command[MAXLEN] = "sbqwerbkkk";
printf("COMMAND : %s\n", command);
printf("TEXT BEFORE : %s\n", str);
char* pfind = command + 2; // skip initial sb
char* psub = strchr(pfind, 'b'); // find delimiter
*psub = '\0'; // terminate replace string
++psub; // point to substitute substring
size_t flen = strlen(pfind); // calculate length
size_t slen = strlen(psub); // calculate length
char* p = strstr(str, pfind); // find location of replace string
size_t sc = strlen(p); // calculate length
memmove(p + slen, p + flen, sc - flen + 1); // Move trailing part
strncpy(p, psub, slen); // Put in substitute substring
printf("TEXT AFTER : %s\n", str);
return 0;
}
Output:
COMMAND : sbqwerbkkk
TEXT BEFORE : aaabbbcccqwerdd
TEXT AFTER : aaabbbccckkkdd
Disclamer
In order to keep the code example short, the above code blindly trust that the command and the original string form a legal substitution and that there are sufficient memory for the result.
In real code, you need to check that. For instance check that strchr and strstr doesn't return NULL.
I have been trying to tokenize a string using SPACE as delimiter but it doesn't work. Does any one have suggestion on why it doesn't work?
Edit: tokenizing using:
strtok(string, " ");
The code is like the following
pch = strtok (str," ");
while (pch != NULL)
{
printf ("%s\n",pch);
pch = strtok (NULL, " ");
}
Do it like this:
char s[256];
strcpy(s, "one two three");
char* token = strtok(s, " ");
while (token) {
printf("token: %s\n", token);
token = strtok(NULL, " ");
}
Note: strtok modifies the string its tokenising, so it cannot be a const char*.
Here's an example of strtok usage, keep in mind that strtok is destructive of its input string (and therefore can't ever be used on a string constant
char *p = strtok(str, " ");
while(p != NULL) {
printf("%s\n", p);
p = strtok(NULL, " ");
}
Basically the thing to note is that passing a NULL as the first parameter to strtok tells it to get the next token from the string it was previously tokenizing.
strtok can be very dangerous. It is not thread safe. Its intended use is to be called over and over in a loop, passing in the output from the previous call. The strtok function has an internal variable that stores the state of the strtok call. This state is not unique to each thread - it is global. If any other code uses strtok in another thread, you get problems. Not the kind of problems you want to track down either!
I'd recommend looking for a regex implementation, or using sscanf to pull apart the string.
Try this:
char strprint[256];
char text[256];
strcpy(text, "My string to test");
while ( sscanf( text, "%s %s", strprint, text) > 0 ) {
printf("token: %s\n", strprint);
}
Note: The 'text' string is destroyed as it's separated. This may not be the preferred behaviour =)
You can simplify the code by introducing an extra variable.
#include <string.h>
#include <stdio.h>
int main()
{
char str[100], *s = str, *t = NULL;
strcpy(str, "a space delimited string");
while ((t = strtok(s, " ")) != NULL) {
s = NULL;
printf(":%s:\n", t);
}
return 0;
}
I've made some string functions in order to split values, by using less pointers as I could because this code is intended to run on PIC18F processors. Those processors does not handle really good with pointers when you have few free RAM available:
#include <stdio.h>
#include <string.h>
char POSTREQ[255] = "pwd=123456&apply=Apply&d1=88&d2=100&pwr=1&mpx=Internal&stmo=Stereo&proc=Processor&cmp=Compressor&ip1=192&ip2=168&ip3=10&ip4=131&gw1=192&gw2=168&gw3=10&gw4=192&pt=80&lic=&A=A";
int findchar(char *string, int Start, char C) {
while((string[Start] != 0)) { Start++; if(string[Start] == C) return Start; }
return -1;
}
int findcharn(char *string, int Times, char C) {
int i = 0, pos = 0, fnd = 0;
while(i < Times) {
fnd = findchar(string, pos, C);
if(fnd < 0) return -1;
if(fnd > 0) pos = fnd;
i++;
}
return fnd;
}
void mid(char *in, char *out, int start, int end) {
int i = 0;
int size = end - start;
for(i = 0; i < size; i++){
out[i] = in[start + i + 1];
}
out[size] = 0;
}
void getvalue(char *out, int index) {
mid(POSTREQ, out, findcharn(POSTREQ, index, '='), (findcharn(POSTREQ, index, '&') - 1));
}
void main() {
char n_pwd[7];
char n_d1[7];
getvalue(n_d1, 1);
printf("Value: %s\n", n_d1);
}
When reading the strtok documentation, I see you need to pass in a NULL pointer after the first "initializing" call. Maybe you didn't do that. Just a guess of course.
Here is another strtok() implementation, which has the ability to recognize consecutive delimiters (standard library's strtok() does not have this)
The function is a part of BSD licensed string library, called zString. You are more than welcome to contribute :)
https://github.com/fnoyanisi/zString
char *zstring_strtok(char *str, const char *delim) {
static char *static_str=0; /* var to store last address */
int index=0, strlength=0; /* integers for indexes */
int found = 0; /* check if delim is found */
/* delimiter cannot be NULL
* if no more char left, return NULL as well
*/
if (delim==0 || (str == 0 && static_str == 0))
return 0;
if (str == 0)
str = static_str;
/* get length of string */
while(str[strlength])
strlength++;
/* find the first occurance of delim */
for (index=0;index<strlength;index++)
if (str[index]==delim[0]) {
found=1;
break;
}
/* if delim is not contained in str, return str */
if (!found) {
static_str = 0;
return str;
}
/* check for consecutive delimiters
*if first char is delim, return delim
*/
if (str[0]==delim[0]) {
static_str = (str + 1);
return (char *)delim;
}
/* terminate the string
* this assignmetn requires char[], so str has to
* be char[] rather than *char
*/
str[index] = '\0';
/* save the rest of the string */
if ((str + index + 1)!=0)
static_str = (str + index + 1);
else
static_str = 0;
return str;
}
As mentioned in previous posts, since strtok(), or the one I implmented above, relies on a static *char variable to preserve the location of last delimiter between consecutive calls, extra care should be taken while dealing with multi-threaded aplications.
int not_in_delimiter(char c, char *delim){
while(*delim != '\0'){
if(c == *delim) return 0;
delim++;
}
return 1;
}
char *token_separater(char *source, char *delimiter, char **last){
char *begin, *next_token;
char *sbegin;
/*Get the start of the token */
if(source)
begin = source;
else
begin = *last;
sbegin = begin;
/*Scan through the string till we find character in delimiter. */
while(*begin != '\0' && not_in_delimiter(*begin, delimiter)){
begin++;
}
/* Check if we have reached at of the string */
if(*begin == '\0') {
/* We dont need to come further, hence return NULL*/
*last = NULL;
return sbegin;
}
/* Scan the string till we find a character which is not in delimiter */
next_token = begin;
while(next_token != '\0' && !not_in_delimiter(*next_token, delimiter)) {
next_token++;
}
/* If we have not reached at the end of the string */
if(*next_token != '\0'){
*last = next_token--;
*next_token = '\0';
return sbegin;
}
}
void main(){
char string[10] = "abcb_dccc";
char delim[10] = "_";
char *token = NULL;
char *last = "" ;
token = token_separater(string, delim, &last);
printf("%s\n", token);
while(last){
token = token_separater(NULL, delim, &last);
printf("%s\n", token);
}
}
You can read detail analysis at blog mentioned in my profile :)
I have a string of 80 chars (line from .txt file)
Somewhere at the end of the string I have numbers or strings or chars and "," (comma) between them. I need to delete these spaces around "," so I will be able to get them by strtok().
Any ideas ?
For example :
String : " name: today 12 ,r ,ab, 5 , seven"<br>
I need : " name: today 12,r,ab,5,seven"
You can apply this algorithm ::
Find the element , in this case a space.
Replace the element with an element of your choice, in this case an empty character.
This function might come handy for replacing any character to a string. You might add the char *replace function as a snippet and use it later for similar purposes.
char *replace(const char *the_input_string, char the_character,
const char *replacing_string)
{
int count = 0;
const char *t;
for(t=the_input_string; *t; t++)
count += (*t == the_character);
size_t rlen = strlen(replacing_string);
char *res = (char*)malloc(strlen(the_input_string) + (rlen-1)*count + 1);
char *ptr = res;
for(t=the_input_string; *t; t++)
{
if(*t == the_character)
{
memcpy(ptr, replacing_string, rlen);
ptr += rlen;
}
else
*ptr++ = *t;
}
*ptr = 0;
return res;
}
Driver Program ::
int main(int argc, char const *argv[])
{
const char *s = replace("name: today 12 ,r ,ab, 5 , seven", ' ', "");
printf("%s\n", s);
return 0;
}
Please refer to this link and the code might be verisimilar but use the above code as the solution mentioned there might throw some errors or warnings.
Because the resulting string will be shorter then the original string, you can do the replacement in place: When you find a comma, copy it and skip the following space. To treat the space before the comma, keep track of the first space after the last non-space character and skip that, too if necessary:
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
void remspc(char *str)
{
char *first = str; // dest. char after last non-space
char *q = str; // destination pointer
// skip leading white space
while (isspace((unsigned char) *str)) str++;
while (*str) {
if (*str == ',') {
q = first; // skip space before comma
*q++ = *str++;
first = q;
// skip space after comma
while (isspace((unsigned char) *str)) str++;
} else {
// remember last non-space
if (!isspace((unsigned char) *str)) first = q + 1;
*q++ = *str++;
}
}
*first = '\0';
}
int main(void)
{
char str[] = " name: today 12, r ,ab, , 5 , seven";
remspc(str);
puts(str);
return 0;
}
This solution will run commas that are separated by white space together, which may lead to problems with strtok, because it will consider stretches of commas as a single delimiter.
You may give this a try!
Replace with your code where necessary.
#include <stdio.h>
#include <stdlib.h>
int main()
{ int i;
char line[] = "name: today 12 ,r ,ab, 5 , seven";
int length = strlen(line);
char line2[length];
for(i = 0; i<length; i++) {
if(!isspace(line[i])) {
line2[i] = line[i];
}
}
for(i = 0; i<length; i++){
printf("%c", line2[i]);
}
return 0;
}
I have been trying to tokenize a string using SPACE as delimiter but it doesn't work. Does any one have suggestion on why it doesn't work?
Edit: tokenizing using:
strtok(string, " ");
The code is like the following
pch = strtok (str," ");
while (pch != NULL)
{
printf ("%s\n",pch);
pch = strtok (NULL, " ");
}
Do it like this:
char s[256];
strcpy(s, "one two three");
char* token = strtok(s, " ");
while (token) {
printf("token: %s\n", token);
token = strtok(NULL, " ");
}
Note: strtok modifies the string its tokenising, so it cannot be a const char*.
Here's an example of strtok usage, keep in mind that strtok is destructive of its input string (and therefore can't ever be used on a string constant
char *p = strtok(str, " ");
while(p != NULL) {
printf("%s\n", p);
p = strtok(NULL, " ");
}
Basically the thing to note is that passing a NULL as the first parameter to strtok tells it to get the next token from the string it was previously tokenizing.
strtok can be very dangerous. It is not thread safe. Its intended use is to be called over and over in a loop, passing in the output from the previous call. The strtok function has an internal variable that stores the state of the strtok call. This state is not unique to each thread - it is global. If any other code uses strtok in another thread, you get problems. Not the kind of problems you want to track down either!
I'd recommend looking for a regex implementation, or using sscanf to pull apart the string.
Try this:
char strprint[256];
char text[256];
strcpy(text, "My string to test");
while ( sscanf( text, "%s %s", strprint, text) > 0 ) {
printf("token: %s\n", strprint);
}
Note: The 'text' string is destroyed as it's separated. This may not be the preferred behaviour =)
You can simplify the code by introducing an extra variable.
#include <string.h>
#include <stdio.h>
int main()
{
char str[100], *s = str, *t = NULL;
strcpy(str, "a space delimited string");
while ((t = strtok(s, " ")) != NULL) {
s = NULL;
printf(":%s:\n", t);
}
return 0;
}
I've made some string functions in order to split values, by using less pointers as I could because this code is intended to run on PIC18F processors. Those processors does not handle really good with pointers when you have few free RAM available:
#include <stdio.h>
#include <string.h>
char POSTREQ[255] = "pwd=123456&apply=Apply&d1=88&d2=100&pwr=1&mpx=Internal&stmo=Stereo&proc=Processor&cmp=Compressor&ip1=192&ip2=168&ip3=10&ip4=131&gw1=192&gw2=168&gw3=10&gw4=192&pt=80&lic=&A=A";
int findchar(char *string, int Start, char C) {
while((string[Start] != 0)) { Start++; if(string[Start] == C) return Start; }
return -1;
}
int findcharn(char *string, int Times, char C) {
int i = 0, pos = 0, fnd = 0;
while(i < Times) {
fnd = findchar(string, pos, C);
if(fnd < 0) return -1;
if(fnd > 0) pos = fnd;
i++;
}
return fnd;
}
void mid(char *in, char *out, int start, int end) {
int i = 0;
int size = end - start;
for(i = 0; i < size; i++){
out[i] = in[start + i + 1];
}
out[size] = 0;
}
void getvalue(char *out, int index) {
mid(POSTREQ, out, findcharn(POSTREQ, index, '='), (findcharn(POSTREQ, index, '&') - 1));
}
void main() {
char n_pwd[7];
char n_d1[7];
getvalue(n_d1, 1);
printf("Value: %s\n", n_d1);
}
When reading the strtok documentation, I see you need to pass in a NULL pointer after the first "initializing" call. Maybe you didn't do that. Just a guess of course.
Here is another strtok() implementation, which has the ability to recognize consecutive delimiters (standard library's strtok() does not have this)
The function is a part of BSD licensed string library, called zString. You are more than welcome to contribute :)
https://github.com/fnoyanisi/zString
char *zstring_strtok(char *str, const char *delim) {
static char *static_str=0; /* var to store last address */
int index=0, strlength=0; /* integers for indexes */
int found = 0; /* check if delim is found */
/* delimiter cannot be NULL
* if no more char left, return NULL as well
*/
if (delim==0 || (str == 0 && static_str == 0))
return 0;
if (str == 0)
str = static_str;
/* get length of string */
while(str[strlength])
strlength++;
/* find the first occurance of delim */
for (index=0;index<strlength;index++)
if (str[index]==delim[0]) {
found=1;
break;
}
/* if delim is not contained in str, return str */
if (!found) {
static_str = 0;
return str;
}
/* check for consecutive delimiters
*if first char is delim, return delim
*/
if (str[0]==delim[0]) {
static_str = (str + 1);
return (char *)delim;
}
/* terminate the string
* this assignmetn requires char[], so str has to
* be char[] rather than *char
*/
str[index] = '\0';
/* save the rest of the string */
if ((str + index + 1)!=0)
static_str = (str + index + 1);
else
static_str = 0;
return str;
}
As mentioned in previous posts, since strtok(), or the one I implmented above, relies on a static *char variable to preserve the location of last delimiter between consecutive calls, extra care should be taken while dealing with multi-threaded aplications.
int not_in_delimiter(char c, char *delim){
while(*delim != '\0'){
if(c == *delim) return 0;
delim++;
}
return 1;
}
char *token_separater(char *source, char *delimiter, char **last){
char *begin, *next_token;
char *sbegin;
/*Get the start of the token */
if(source)
begin = source;
else
begin = *last;
sbegin = begin;
/*Scan through the string till we find character in delimiter. */
while(*begin != '\0' && not_in_delimiter(*begin, delimiter)){
begin++;
}
/* Check if we have reached at of the string */
if(*begin == '\0') {
/* We dont need to come further, hence return NULL*/
*last = NULL;
return sbegin;
}
/* Scan the string till we find a character which is not in delimiter */
next_token = begin;
while(next_token != '\0' && !not_in_delimiter(*next_token, delimiter)) {
next_token++;
}
/* If we have not reached at the end of the string */
if(*next_token != '\0'){
*last = next_token--;
*next_token = '\0';
return sbegin;
}
}
void main(){
char string[10] = "abcb_dccc";
char delim[10] = "_";
char *token = NULL;
char *last = "" ;
token = token_separater(string, delim, &last);
printf("%s\n", token);
while(last){
token = token_separater(NULL, delim, &last);
printf("%s\n", token);
}
}
You can read detail analysis at blog mentioned in my profile :)
I have been trying to tokenize a string using SPACE as delimiter but it doesn't work. Does any one have suggestion on why it doesn't work?
Edit: tokenizing using:
strtok(string, " ");
The code is like the following
pch = strtok (str," ");
while (pch != NULL)
{
printf ("%s\n",pch);
pch = strtok (NULL, " ");
}
Do it like this:
char s[256];
strcpy(s, "one two three");
char* token = strtok(s, " ");
while (token) {
printf("token: %s\n", token);
token = strtok(NULL, " ");
}
Note: strtok modifies the string its tokenising, so it cannot be a const char*.
Here's an example of strtok usage, keep in mind that strtok is destructive of its input string (and therefore can't ever be used on a string constant
char *p = strtok(str, " ");
while(p != NULL) {
printf("%s\n", p);
p = strtok(NULL, " ");
}
Basically the thing to note is that passing a NULL as the first parameter to strtok tells it to get the next token from the string it was previously tokenizing.
strtok can be very dangerous. It is not thread safe. Its intended use is to be called over and over in a loop, passing in the output from the previous call. The strtok function has an internal variable that stores the state of the strtok call. This state is not unique to each thread - it is global. If any other code uses strtok in another thread, you get problems. Not the kind of problems you want to track down either!
I'd recommend looking for a regex implementation, or using sscanf to pull apart the string.
Try this:
char strprint[256];
char text[256];
strcpy(text, "My string to test");
while ( sscanf( text, "%s %s", strprint, text) > 0 ) {
printf("token: %s\n", strprint);
}
Note: The 'text' string is destroyed as it's separated. This may not be the preferred behaviour =)
You can simplify the code by introducing an extra variable.
#include <string.h>
#include <stdio.h>
int main()
{
char str[100], *s = str, *t = NULL;
strcpy(str, "a space delimited string");
while ((t = strtok(s, " ")) != NULL) {
s = NULL;
printf(":%s:\n", t);
}
return 0;
}
I've made some string functions in order to split values, by using less pointers as I could because this code is intended to run on PIC18F processors. Those processors does not handle really good with pointers when you have few free RAM available:
#include <stdio.h>
#include <string.h>
char POSTREQ[255] = "pwd=123456&apply=Apply&d1=88&d2=100&pwr=1&mpx=Internal&stmo=Stereo&proc=Processor&cmp=Compressor&ip1=192&ip2=168&ip3=10&ip4=131&gw1=192&gw2=168&gw3=10&gw4=192&pt=80&lic=&A=A";
int findchar(char *string, int Start, char C) {
while((string[Start] != 0)) { Start++; if(string[Start] == C) return Start; }
return -1;
}
int findcharn(char *string, int Times, char C) {
int i = 0, pos = 0, fnd = 0;
while(i < Times) {
fnd = findchar(string, pos, C);
if(fnd < 0) return -1;
if(fnd > 0) pos = fnd;
i++;
}
return fnd;
}
void mid(char *in, char *out, int start, int end) {
int i = 0;
int size = end - start;
for(i = 0; i < size; i++){
out[i] = in[start + i + 1];
}
out[size] = 0;
}
void getvalue(char *out, int index) {
mid(POSTREQ, out, findcharn(POSTREQ, index, '='), (findcharn(POSTREQ, index, '&') - 1));
}
void main() {
char n_pwd[7];
char n_d1[7];
getvalue(n_d1, 1);
printf("Value: %s\n", n_d1);
}
When reading the strtok documentation, I see you need to pass in a NULL pointer after the first "initializing" call. Maybe you didn't do that. Just a guess of course.
Here is another strtok() implementation, which has the ability to recognize consecutive delimiters (standard library's strtok() does not have this)
The function is a part of BSD licensed string library, called zString. You are more than welcome to contribute :)
https://github.com/fnoyanisi/zString
char *zstring_strtok(char *str, const char *delim) {
static char *static_str=0; /* var to store last address */
int index=0, strlength=0; /* integers for indexes */
int found = 0; /* check if delim is found */
/* delimiter cannot be NULL
* if no more char left, return NULL as well
*/
if (delim==0 || (str == 0 && static_str == 0))
return 0;
if (str == 0)
str = static_str;
/* get length of string */
while(str[strlength])
strlength++;
/* find the first occurance of delim */
for (index=0;index<strlength;index++)
if (str[index]==delim[0]) {
found=1;
break;
}
/* if delim is not contained in str, return str */
if (!found) {
static_str = 0;
return str;
}
/* check for consecutive delimiters
*if first char is delim, return delim
*/
if (str[0]==delim[0]) {
static_str = (str + 1);
return (char *)delim;
}
/* terminate the string
* this assignmetn requires char[], so str has to
* be char[] rather than *char
*/
str[index] = '\0';
/* save the rest of the string */
if ((str + index + 1)!=0)
static_str = (str + index + 1);
else
static_str = 0;
return str;
}
As mentioned in previous posts, since strtok(), or the one I implmented above, relies on a static *char variable to preserve the location of last delimiter between consecutive calls, extra care should be taken while dealing with multi-threaded aplications.
int not_in_delimiter(char c, char *delim){
while(*delim != '\0'){
if(c == *delim) return 0;
delim++;
}
return 1;
}
char *token_separater(char *source, char *delimiter, char **last){
char *begin, *next_token;
char *sbegin;
/*Get the start of the token */
if(source)
begin = source;
else
begin = *last;
sbegin = begin;
/*Scan through the string till we find character in delimiter. */
while(*begin != '\0' && not_in_delimiter(*begin, delimiter)){
begin++;
}
/* Check if we have reached at of the string */
if(*begin == '\0') {
/* We dont need to come further, hence return NULL*/
*last = NULL;
return sbegin;
}
/* Scan the string till we find a character which is not in delimiter */
next_token = begin;
while(next_token != '\0' && !not_in_delimiter(*next_token, delimiter)) {
next_token++;
}
/* If we have not reached at the end of the string */
if(*next_token != '\0'){
*last = next_token--;
*next_token = '\0';
return sbegin;
}
}
void main(){
char string[10] = "abcb_dccc";
char delim[10] = "_";
char *token = NULL;
char *last = "" ;
token = token_separater(string, delim, &last);
printf("%s\n", token);
while(last){
token = token_separater(NULL, delim, &last);
printf("%s\n", token);
}
}
You can read detail analysis at blog mentioned in my profile :)