Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

cÀïÃæµÄðºÅ——λÓò¶¨ÒåÆ÷

 typedef struct _RTP_header {
        /* byte 0 */
        #if (BYTE_ORDER == LITTLE_ENDIAN)
            unsigned char csrc_len:4;        /* expect 0 */
            unsigned char extension:1;        /* expect 1, see RTP_OP below */
            unsigned char padding:1;        /* expect 0 */
            unsigned char version:2;        /* expect 2 */
        #elif (BYTE_ORDER == BIG_ENDIAN)
            unsigned char version:2;
            unsigned char padding:1;
            unsigned char extension:1;
            unsigned char csrc_len:4;
        #else
            #error Neither big nor little
        #endif
        /* byte 1 */
        #if (BYTE_ORDER == LITTLE_ENDIAN)
            unsigned char payload:7;        /* RTP_PAYLOAD_RTSP */
            unsigned char marker:1;            /* expect 1 */
        #elif (BYTE_ORDER == BIG_ENDIAN)
            unsigned char marker:1;
            unsigned char payload:7;
       &n


Ïà¹ØÎĵµ£º

(C/C++)ÖµµÃÑо¿µÄһЩº¯Êý

1. memcpyº¯ÊýµÄʵÏÖ
Ê×ÏȶÔÕâ¸öº¯Êý×öһЩ˵Ã÷¡£
#include <string.h>
void *memcpy(void *to, const void *from, size_t count)
º¯Êýmemcpy()´ÓfromÖ¸ÏòµÄÊý×éÏòtoÖ¸ÏòµÄÊý×鏴֯count¸ö×Ö·û¡£Èç¹ûÁ½Êý×éÖØµþ£¬²»¶¨Ò庯ÊýµÄÐÐΪ¡£
ÔÚC99ÖУ¬toºÍfromÓÉrestrictÐÞÊΡ£
ÏÈÀ´¿´¿´Î¢ÈíµÄʵÏÖ£º
void * __cdecl m ......

C++ÖÐextern ¡°C¡±º¬ÒåÉî²ã̽Ë÷

 
1.ÒýÑÔ
¡¡¡¡C++ÓïÑԵĴ´½¨³õÖÔÊÇ¡°a better C¡±£¬µ«ÊÇÕâ²¢²»Òâζ×ÅC++ÖÐÀàËÆCÓïÑÔµÄÈ«¾Ö±äÁ¿ºÍº¯ÊýËù²ÉÓõıàÒëºÍÁ¬½Ó·½Ê½ÓëCÓïÑÔÍêÈ«Ïàͬ¡£×÷ΪһÖÖÓûÓëC¼æÈݵÄÓïÑÔ£¬C++±£ÁôÁËÒ»²¿·Ö¹ý³ÌʽÓïÑÔµÄÌØµã£¨±»ÊÀÈ˳ÆÎª¡°²»³¹µ×µØÃæÏò¶ÔÏó¡±£©£¬Òò¶øËü¿ÉÒÔ¶¨Òå²»ÊôÓÚÈκÎÀàµÄÈ«¾Ö±äÁ¿ºÍº¯Êý¡£µ«ÊÇ£¬C++±Ï¾¹ÊÇÒ»ÖÖÃæÏò¶ ......

C/C++ÖÐÖ¸Õë¼Ó 1 µÄÎÊÌâ

 
ÏÈÓñ´¶ûµÄÒ»µÀ±ÊÊÔÌâ¼òÒªµÄ˵Ã÷һϰɣº
¡¾Ì⡿˵Ã÷ÒÔϳÌÐò¡£
#include
int main(void)
{
unsigned int a[3] = {0x01020304, 0x05060708, 0x090a0b0c};
unsigned int *p = (unsigned int *)((int)a +1);¢Ù
printf("%x\n", *p);
return 0;
}
¡¾ÌâÄ¿½âÎö¡¿
Õâ¶Î³ÌÐòµÄÊä³ö½á¹ûÓ¦ ......

CÖеĿɱä²ÎÊýÑо¿

 CÖеĿɱä²ÎÊýÑо¿  
  
  Ò»£®  ºÎν¿É±ä²ÎÊý  
  int   printf(const   char*   format,   ...);    
  ÕâÊÇʹÓùýCÓïÑÔµÄÈËËùÔÙÊìϤ²»¹ýµÄprintfº¯ÊýÔ­ÐÍ£¬ËüµÄ²ÎÊýÖоÍÓй̶¨²ÎÊýformat ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ