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

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¦¸ÃÊÇ 8010203£¨¼´0x08010203£©¡£
ÄÚ´æ´æ´¢½á¹¹È磨ͼ1£©Ëùʾ£¨ÔÚ big-endian µÄϵͳÖУ©¡£ÔÚ¢Ù´¦µÄÓï¾äÖУ¬Ê×ÏȰÑÊý×é a µÄÊ×µØÖ·×ª»¯ÎªÕûÐÍ£¬È»ºóÔÙ¼Ó 1 £¬ÔÙÇ¿ÖÆ×ª»¯Îª (unsigned int *) ,Õâ¸öʱºò p ÖµÓ¦¸ÃÊÇ 0x1235£¬ËùÒÔÈ¡µÄÊÇ´Ó 0x1235 µ½ 0x1238 Ëĸö×Ö½Ú×é³ÉµÄеÄÕûÊý£¬ËùÒÔ¾ÍÊÇ 0x08010203¡£
¸ø³ö¹«Ê½µÄ»°¾ÍÊÇ (a[0]>>8 | a[1]


Ïà¹ØÎĵµ£º

ÓÃCÉè¼Æ£¬ÓÃC++±àÂë

ÍøÓѹ۵ã:
(Ò»): 
ÎÒÈÏΪºÜ¶àÈËûÓÐÀí½âlinus»òÕßmyanµÄÒâ˼£¬ÎÒ¾Ù¸öʵÀý¡£
ÎÒÃÇÏÖÔÚÒªÉè¼ÆÒ»Ì×ÍøÂ磭¿Í»§¶ËÈí¼þ£¬ÎÒÃÇÒªÏȰÑЭÒ鶨ºÃ£¬°Ñ½çÃæºÍºǫ́½»»¥Éè¼ÆÏëºÃ£¬°ÑÈÝ´íºÍ»Ö¸´ÏëºÃ£¬ÎÒÈÏΪÕâЩÊÇ×îÖØÒªµÄ£¬ÖÁÓÚ±àÂ룬ÓÃCÒ²¿ÉÒÔ±à³öÀ´£¬ÓÃC£«£«Ò²¿ÉÒÔ±à³öÀ´£¬ÉõÖÁÓÃJAVAÒ²Äܱà³öÀ´£¬¹Ø¼üÊÇÕû¸öÈí¼þµÄ¼Ü¹¹ÒªÇåÎú£¬Õ ......

linux c oci Ô¶³ÌÁ¬½ÓÀý×Ó

ÒÔÏÂÊÇÎҵIJâÊÔociµÄÀý×Ó£¡
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "oci.h"
static OCIServer        *srvhp;
static OCISession       *p_session;
static OCIEnv    &nb ......

C/C++ÖеÄÈÕÆÚºÍʱ¼ä time_tÓëstruct tm

 ±¾ÎÄ´Ó½éÉÜ»ù´¡¸ÅÄîÈëÊÖ£¬Ì½ÌÖÁËÔÚC/C++ÖжÔÈÕÆÚºÍʱ¼ä²Ù×÷ËùÓõ½µÄÊý¾Ý½á¹¹ºÍº¯Êý£¬²¢¶Ô¼ÆÊ±¡¢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 ......

£¨×ª£©ÓÃVIM±àдC/C++³ÌÐò

ÓÃVIM±àдC/C++³ÌÐò£¨×ªÔØ£©
ÓÃVIM±àдC/C++³ÌÐò
ViÊÇUnixÏÂ×î³£ÓõÄÎı¾±à¼­Æ÷¡£VIM£¨Vi IMproved£©ÔòÊÇËüµÄÔöÇ¿°æ¡£ÓÐÈ˳£³£ÄÃVIMºÍemacs±È½Ï£¬VIM¾¡¹Ü²»ÏóemacsÄÇÑùÓÐÄÇô¶àµÄ¹¦ÄÜ£¬µ«ÊDZÈemacs¸ü·½±ã¡¢ºÃÓá£ÓùýemacsµÄÈ˿϶¨»áΪemacsµÄһЩ¿ì½Ý¼ü¸Ðµ½·³ÄÕ£¬ÓÐʱºòÓÃÕæÏ£Íû×Ô¼ºÓаËÖ»ÊÖ¡£VIMµÄѧϰÇúÏßÒ²²»ÏóemacsÄ ......

C/C++Èí¼þ¹¤³Ìʦ±ÊÊÔÌâ

 
C/C++±ÊÊÔÌâϵÁÐ
Ô¤´¦ÀíÆ÷£¨Preprocessor£©
1. ÓÃÔ¤´¦ÀíÖ¸Áî#define ÉùÃ÷Ò»¸ö³£Êý£¬ÓÃÒÔ±íÃ÷1ÄêÖÐÓжàÉÙÃ루ºöÂÔÈòÄêÎÊÌ⣩
#define SECONDS_PER_YEAR (60 * 60 * 24 * 365)UL
ÎÒÔÚÕâÏë¿´µ½¼¸¼þÊÂÇ飺
1). #define Óï·¨µÄ»ù±¾ÖªÊ¶£¨ÀýÈ磺²»ÄÜÒԷֺŽáÊø£¬À¨ºÅµÄʹÓ㬵ȵȣ©
2). ¶®µÃÔ¤´¦ÀíÆ÷½«ÎªÄã¼ÆËã³ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ