Implement strtok() function. (It tokenizes the string )

Implementation of strtok

char* strtok(char *s, const char *delim) {
static char *old = NULL;
char *token;
if(! s) {
s = old;
if(! s) {
return NULL;
}
}
if(s) {
s += strspn(s, delim);
if(*s == 0) {
old = NULL;
return NULL;
}
}

token = s;
s = strpbrk(s, delim);
if(s == NULL) {
old = NULL;
} else {
*s = 0;
old = s + 1;
}
return token;
}

May 4, 2008 | Filed Under C++ 

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