关于curl中multi使用，怎么将得到的网页内容存储在*char 中

关于curl中multi使用，如何将得到的网页内容存储在*char 中

比如我有100000个网页url 我的任务池 每次都是10个 完成4个补充4个，并把网页内容存储下来 失败原因什么也存储
这是curl官网的例子 希望能给解释下
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#ifndef WIN32
# include <unistd.h>
#endif
#include <curl/multi.h>

static const char *urls[] = {
  "http://www.microsoft.com",
  "http://www.opensource.org",
  "http://www.google.com",
  "http://www.yahoo.com",
  "http://www.ibm.com",
  "http://www.mysql.com",
  "http://www.oracle.com",
  "http://www.ripe.net",
  "http://www.iana.org",
  "http://www.amazon.com",
  "http://www.netcraft.com",
  "http://www.heise.de",
  "http://www.chip.de",
  "http://www.ca.com",
  "http://www.cnet.com",
  "http://www.news.com",
  "http://www.cnn.com",
  "http://www.wikipedia.org",
  "http://www.dell.com",
  "http://www.hp.com",
  "http://www.cert.org",
  "http://www.mit.edu",
  "http://www.nist.gov",
  "http://www.ebay.com",
  "http://www.playstation.com",
  "http://www.uefa.com",
  "http://www.ieee.org",
  "http://www.apple.com",
  "http://www.sony.com",
  "http://www.symantec.com",
  "http://www.zdnet.com",
  "http://www.fujitsu.com",
  "http://www.supermicro.com",
  "http://www.hotmail.com",
  "http://www.ecma.com",
  "http://www.bbc.co.uk",
  "http://news.google.com",
  "http://www.foxnews.com",
  "http://www.msn.com",
  "http://www.wired.com",
  "http://www.sky.com",
  "http://www.usatoday.com",
  "http://www.cbs.com",
  "http://www.nbc.com",
  "http://slashdot.org",
  "http://www.bloglines.com",
  "http://www.techweb.com",
  "http://www.newslink.org",
  "http://www.un.org",
};

#define MAX 10 /* number of simultaneous transfers */
#define CNT sizeof(urls)/sizeof(char*) /* total number of transfers to do */

static size_t cb(char *d, size_t n, size_t l, void *p)
{
  /* take care of the data here, ignored in this example */
  (void)d;
  (void)p;
  return n*l;
}

static void init(CURLM *cm, int i)
{
  CURL *eh = curl_easy_init();

  curl_easy_setopt(eh, CURLOPT_WRITEFUNCTION, cb);
  curl_easy_setopt(eh, CURLOPT_HEADER, 0L);
  curl_easy_setopt(eh, CURLOPT_URL, urls[i]);
  curl_easy_setopt(eh, CURLOPT_PRIVATE, urls[i]);
  curl_easy_setopt(eh, CURLOPT_VERBOSE, 0L);

  curl_multi_add_handle(cm, eh);
}

int main(void)
{
  CURLM *cm;
  CURLMsg *msg;
  long L;
  unsigned int C=0;
  int M, Q, U = -1;
  fd_set R, W, E;
  struct timeval T;

  curl_global_init(CURL_GLOBAL_ALL);

  cm = curl_multi_init();

  /* we can optionally limit the total amount of connections this multi handle
  uses */
  curl_multi_setopt(cm, CURLMOPT_MAXCONNECTS, (long)MAX);

  for (C = 0; C < MAX; ++C) {
  init(cm, C);
  }

  while (U) {
  curl_multi_perform(cm, &U);

  if (U) {
  FD_ZERO(&R);
  FD_ZERO(&W);
  FD_ZERO(&E);

  if (curl_multi_fdset(cm, &R, &W, &E, &M)) {
  fprintf(stderr, "E: curl_multi_fdset\n");
  return EXIT_FAILURE;
  }

  if (curl_multi_timeout(cm, &L)) {
  fprintf(stderr, "E: curl_multi_timeout\n");
  return EXIT_FAILURE;
  }
  if (L == -1)
  L = 100;

  if (M == -1) {
#ifdef WIN32
  Sleep(L);
#else
  sleep(L / 1000);
#endif
  } else {
  T.tv_sec = L/1000;
  T.tv_usec = (L%1000)*1000;

  if (0 > select(M+1, &R, &W, &E, &T)) {
  fprintf(stderr, "E: select(%i,,,,%li): %i: %s\n",
  M+1, L, errno, strerror(errno));
  return EXIT_FAILURE;
  }
  }
  }

  while ((msg = curl_multi_info_read(cm, &Q))) {
  if (msg->msg == CURLMSG_DONE) {
  char *url;
  CURL *e = msg->easy_handle;
  curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &url);
  fprintf(stderr, "R: %d - %s <%s>\n",
  msg->data.result, curl_easy_strerror(msg->data.result), url);
  curl_multi_remove_handle(cm, e);
  curl_easy_cleanup(e);
  }
  else {
  fprintf(stderr, "E: CURLMsg (%d)\n", msg->msg);
  }
  if (C < CNT) {
  init(cm, C++);
  U++; /* just to prevent it from remaining at 0 if there are more
  URLs to get */
  }
  }
  }

  curl_multi_cleanup(cm);
  curl_global_cleanup();

  return EXIT_SUCCESS;
}


[解决办法]
程序太长了，顶一个。