strtok

I'm writing a C program to study the usage of function strtok() . Here is my code: #include <stdio.h> #include <string.h> main() { char abc[100] = "ls &"; char *tok; tok = strtok(abc, " "); while (tok != NULL) { printf("%s", tok); tok = strtok(NULL, " "); } printf("\n\n\n\n\n%s", tok); return 0; } It is printing the following output: ls& (null) But I want it to print & at the second printf statement. How do I do it? I need this part for my homework project. Jonathan Leffler Make sure you can identify the limits of what you print when you're printing. Output newlines at the end of printed

strtok wont work correctly when using char *str as the first parameter (not the delimiters string). Does it have something to do with the area that allocates strings in that notation? (which as far as i know, is a read-only area). thanks in advance example: //char* str ="- This, a sample string."; // <---doesn't work char str[] ="- This, a sample string."; // <---works char delims[] = " "; char * pch; printf ("Splitting string \"%s\" into tokens:\n",str); pch = strtok (str,delims); while (pch != NULL) { printf ("%s\n",pch); pch = strtok (NULL, delims); } return 0; In the first case, you pass a

I'm trying to use fgets and strtok() to read in a file line by line, and create a linked list of each different line of information. Right now, I'm only just putting the information into an array, just to try to figure out how to read the information in correctly, but it's not working right. In the while(fgets) portion, it seems to load everything into the array properly, and prints it out. However, after that loop has executed and I try to print out the whole array, I get really weird results.. which is mostly portions of the last line ONLY, and not complete words or anything for the most

How can I use strtok_r instead of strtok to do this? char *pchE = strtok(NULL, " "); Now I'm trying to use strtok_r properly... But sometimes I get problems with the strtol . I have a thread that I execute 10 times (at the same time). char *savedEndd1; char *nomeClass = strtok_r(lineClasses, " ", &savedEndd1); char *readLessonS = strtok_r (NULL, " ", &savedEndd1); char *readNTurma = strtok_r(NULL, " ", &savedEndd1); if (readNTurma==NULL) printf("CLASS STRTOL begin %s %s\n",nomeClass, readLessonS ); int numberNTurma = strtol(readNTurma, NULL, 10); And I'm catching that readNTurma == NULL

This question already has an answer here: How does strtok() split the string into tokens in C? 13 answers I found this sample program which explains the strtok function: #include <stdio.h> #include <string.h> int main () { char str[] ="- This, a sample string."; char * pch; printf ("Splitting string \"%s\" into tokens:\n",str); pch = strtok (str," ,.-"); while (pch != NULL) { printf ("%s\n",pch); pch = strtok (NULL, " ,.-"); } return 0; } However, I don't see how this is possible to work. How is it possible that pch = strtok (NULL, " ,.-"); returns a new token. I mean, we are calling strtok

How to split a string into an tokens and then save them in an array? Specifically, I have a string "abc/qwe/jkh" . I want to separate "/" , and then save the tokens into an array. Output will be such that array[0] = "abc" array[1] = "qwe" array[2] = "jkh" please help me rlib #include <stdio.h> #include <string.h> int main () { char buf[] ="abc/qwe/ccd"; int i = 0; char *p = strtok (buf, "/"); char *array[3]; while (p != NULL) { array[i++] = p; p = strtok (NULL, "/"); } for (i = 0; i < 3; ++i) printf("%s\n", array[i]); return 0; } You can use strtok() char string[]= "abc/qwe/jkh"; char *array

For example: Friendly. I don't like the "ly" at the end of the word. Can I tokenize this string by "ly" someCharVariable = strtok("friendly", "ly")? The answer is no. Your example of "ly" will delimit on any occurrence of either "l" or "y" or "yl" or "ly" The delimiter parameter is an array of characters, each meant to act as a delimiter. This is an example of what you asked for: char *iterate(char *p, const char *d, const size_t len) { while(p!=NULL && *p && memcmp(p, d, len)==0) { memset(p, 0x0, len); p+=len; } return p; } char ** tokenize( char **result, char *working, const char *src,

Is strtok hopelessly broken? On many StackOverflow questions about text-parsing in C, someone will suggest using strtok , and one common reply is that strtok should never be used, that it is hopelessly broken. Some posters have claimed that strtok 's problems are limited to multi-threading issues, and it is safe in a single-threaded environment. What is the right answer? Does it work? Is it hopelessly broken? Can you back up your answer with examples? Yes, strtok is hopelessly broken, even in a simple single-threaded program , and I will demonstrate this failure with some sample code: Let us