strok的实现,分割字符串
strok的实现,分割字符串
char *xl_strtok(char *s, const char *dm)
{
static char *last;
char *tok;
if(s == NULL)
s = last;
if(s == NULL)
return NULL;
tok = s;
while (*s != '\0')
{
while (*dm)
{
if (*s == *dm)
{
*s = '\0';
last = s + 1;
break;
}
s++;
}
}
return tok;
}

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