Thread: need some noob help

so I'm working on this project for school, but it's been a while since I've worked in C so I'm having some difficulties... any help would be appreciated.

Code:

char** tokenize (char* str, char* delims, int* arsize){

	char* strptr;

	// set the strptr
	strptr=str;


	// firstly ignore delims at start of string
	while(is_delimiter(*strptr, delims)){
		strptr++;
	}
...
}
int is_delimiter (char needle, char* haystack){
	while(*haystack){
		/* if(needle=*haystack)return 1; */
		if(needle==*haystack++)return 1;
	}
	return 0;
}

so what I wanted to do here is copy the pointer to str into a new char pointer; strptr. Compilation goes fine but on runtime I get a bad pointer exception. Seems like str (which holds a char pointer to the first char in the string) can't be copied to strptr (which is also a char*).

What am I doing wrong please? I guess it's gotta have something to do with the small difference between a Cstring and a char*, but I can't seem to figure it out...


thx in advance

I think what you want to do here is Google for strtok()....

Originally Posted by klmdb

Seems like str (which holds a char pointer to the first char in the string) can't be copied to strptr (which is also a char*)

Something in this statement is false -- if str is a char*, then there will be no problem with strptr=str. Show where str is first declared and the actual call to tokenize.

There is nothing wrong with the code you posted, presuming that is_delimiter works the way you think it does, etc. If not, strptr could run off the end of str, causing your problem.