请高手帮我解释一下这个函数??

majyer

int
ex_memproc (void *connetiont, char *cmdbuff, char *Retbuff1, int Retlen1, char *
Retbuff, int Retlen, int *retsultint)
{
  $char selstmt[1024];
  $char RetBuff[1024];
  $char RetBuff1[1024];
  int ret;
  $int RetCode;
  DEBUGLOG (ZFMMLOG, "function ex_memproc cmdbuff:=%s", cmdbuff);
  sprintf (selstmt, "%s", cmdbuff);
  $prepare stmt_1 from $selstmt;
  ret = err_chk ("repare";
  if (ret < 0)
    return -1;
  $declare c cursor for stmt_1;
  ret
    = err_chk ("Declare cursor";
  if (ret < 0)
    return -1;
  $open c;
ret = err_chk ("Open cursor";
  if (ret < 0)
    return -1;
  $fetch c into:RetCode,:RetBuff,:RetBuff1;
  if (SQLCODE == SQLNOTFOUND)
    return -1;
  else
    {
      ret = err_chk ("Fetch";
      if (ret < 0)
        return -1;
    }

  $close c;
  ret = err_chk ("Close cursor";
  if (ret < 0)
    return -1;
  memcpy (Retbuff, RetBuff, sizeof (RetBuff));
  memcpy (Retbuff1, RetBuff1, sizeof (RetBuff1));
  *retsultint = RetCode;
  return 1;
}

satoni

function ex_memproc cmdbuff 返回值赋值给:RetCode,:RetBuff,:RetBuff1，memcpy (Retbuff, RetBuff, sizeof (RetBuff));
memcpy (Retbuff1, RetBuff1, sizeof (RetBuff1));
*retsultint = RetCode;
把返回值作为函数返回值；中间7788的东西无非是判断错误来返回罢了；