以下是引用zy_space在2011-11-26 23:29:49的发言:
是这个?
/*
* Get next token from string *stringp, where tokens are possibly-empty
* strings separated by characters from delim.
*
* Writes NULs into the string at *stringp to end tokens.
* delim need not remain constant from call to call.
* On return, *stringp points past the last NUL written (if there might
* be further tokens), or is NULL (if there are definitely no moretokens).
*
* If *stringp is NULL, strsep returns NULL.
*/
char *strsep(char **stringp, const char *delim)
{
char *s;
const char *spanp;
int c, sc;
char *tok;
if ((s = *stringp)== NULL)
return (NULL);
for (tok = s;;) {
c = *s++;
spanp = delim;
do {
if ((sc =*spanp++) == c) {
if (c == 0)
s = NULL;
else
s[-1] = 0;
*stringp = s;
return (tok);
}
} while (sc != 0);
}
/* NOTREACHED */
}
看清楚,是自己编一个strsep函数