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
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×鸴ÖÆcount¸ö×Ö·û¡£Èç¹ûÁ½Êý×éÖصþ£¬²»¶¨Ò庯ÊýµÄÐÐΪ¡£
ÔÚC99ÖУ¬toºÍfromÓÉrestrictÐÞÊΡ£
ÏÈÀ´¿´¿´Î¢ÈíµÄʵÏÖ£º
void * __cdecl m ......
ÒÔÏÂÊÇÎҵIJâÊÔociµÄÀý×Ó£¡
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "oci.h"
static OCIServer *srvhp;
static OCISession *p_session;
static OCIEnv &nb ......
±¾ÎÄ´Ó½éÉÜ»ù´¡¸ÅÄîÈëÊÖ£¬Ì½ÌÖÁËÔÚC/C++ÖжÔÈÕÆÚºÍʱ¼ä²Ù×÷ËùÓõ½µÄÊý¾Ý½á¹¹ºÍº¯Êý£¬²¢¶Ô¼Æʱ¡¢Ê±¼äµÄ»ñÈ¡¡¢Ê±¼äµÄ¼ÆËãºÍÏÔʾ¸ñʽµÈ·½Ãæ½øÐÐÁ˲ûÊö¡£±¾ÎÄ»¹Í¨¹ý´óÁ¿µÄʵÀýÏòÄãչʾÁËtime.hÍ·ÎļþÖÐÉùÃ÷µÄ¸÷ÖÖº¯ÊýºÍÊý¾Ý½á¹¹µÄÏêϸʹÓ÷½·¨¡£
¹Ø¼ü×Ö£ºUTC£¨ÊÀ½ç±ê׼ʱ¼ä£©£¬Calendar Time£¨ÈÕÀúʱ¼ä£©£¬epoch£¨Ê±¼äµã ......
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¿·Ö¹ý³ÌʽÓïÑÔµÄÌص㣨±»ÊÀÈ˳ÆΪ¡°²»³¹µ×µØÃæÏò¶ÔÏó¡±£©£¬Òò¶øËü¿ÉÒÔ¶¨Òå²»ÊôÓÚÈκÎÀàµÄÈ«¾Ö±äÁ¿ºÍº¯Êý¡£µ«ÊÇ£¬C++±Ï¾¹ÊÇÒ»ÖÖÃæÏò¶ ......