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

ANSI C¶ÁÊé±Ê¼ÇϵÁÐÖ®×Ö·û¼¯Æª µÚËÄÕ ×Ö½ÚÐò

"endian"Õâ¸ö´Ê³ö×Ô<<¸ñÁзðÓμÇ>>,СÈ˹úµÄÄÚÕ½¾ÍÔ´ÓÚ³Ô¼¦µ°Ê±ÊǾ¿¾¹´Ó´óÍ·(Big-Endian)Çÿª»¹ÊÇ´ÓСͷ(Little-Endian)Çÿª.ÎÒÃÇÒ»°ã½«endian·­Òë³É"×Ö½ÚÐò",½«big endianºÍlittle endian³Æ×÷"´ó¶Ë"ºÍ"С¶Ë".
ÔÚ¼ÆËã»ú¿ÆÑ§ÁìÓòÖÐ,×Ö½ÚÐòÊÇÖ¸´æ·Å¶à×Ö½ÚÊý¾ÝµÄ×Ö½ÚµÄ˳Ðò,µäÐ͵ÄÇé¿öÊÇÕûÊýÔÚÄÚ´æÖеĴæ·Å·½Ê½ºÍÍøÂç´«ÊäµÄ´«Êä˳Ðò.¼ÈÈ»ÎÒÃÇÔÚ±¾Æª½éÉÜ×Ö½ÚÐò,ÄÇËù˵µÄÖØµãÔòÆäÒ»ÊÇ×Ö·û(¶à×Ö½Ú)ÔÚÄÚ´æÖеÄ×Ö½Ú´æ·Å˳Ðò(ÕâÓëÇ°ÃæµÄµäÐÍÇé¿öÊÇͬһÀà),Æä¶þÊÇ×Ö·û(¶à×Ö½Ú)ÔÚÎļþÖб£´æµÄ±àÂë˳Ðò.
Ò»°ã̸µ½×Ö½ÚÐòÎÊÌâ,¶¼ÊÇÖ¸ÉÏÃæËµµÄµäÐÍÇé¿ö,Ö÷ÒªÊÇ´¦ÀíÄÚ´æÖÐÊý¾Ý.ÕâÀïµÄ×Ö½ÚÐò¸úCPUÏà¹Ø,Ö÷񻃾¼°Á½´óÅÉϵ:MotorolaϵÁкÍIntelµÄx86ϵÁÐ.Motorola²ÉÓÃbig endian·½Ê½´æ´¢Êý¾Ý,¶øx86ϵÁÐÔò²ÉÓÃlittle endian·½Ê½´æ´¢Êý¾Ý,µ±È»,»¹ÓÐARMµÈ¿ÉÅäÖÃ"´ó¶Ë""С¶Ë"CPUϵÁÐ.
big endianÊÇÖ¸µÍµØÖ·´æ·Å×î¸ßÓÐЧ×Ö½Ú,¶ølittle endianÔòÊǵ͵ØÖ·´æ·Å×îµÍÓÐЧ×Ö½Ú. ÈçÊý×Ö0x12345678ÔÚÁ½ÖÖ²»Í¬×Ö½ÚÐòCPUÖеĴ洢˳ÐòÈçÏÂËùʾ:
Big Endian
                       µÍµØÖ·                                            ¸ßµØÖ·
                          ----------------------------------------->
                     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                    |     12     |      34    |     56      |     78    |
      &


Ïà¹ØÎĵµ£º

PerlÎļþ²âÊÔ·û CµÄÓ÷¨

ÔÚPerlµÄ¸÷ÖÖÎļþ²âÊÔÔËËã·ûÖУ¬×îÓÐÓõÄÔËËã·ûÖ®Ò»¾ÍÊÇ -C ÁË¡£
Ëü·µ»ØµÄÊÇÎļþµÄctimeµ½³ÌÐòÆô¶¯µÄÄÇһʱ¿Ì¾­¹ýµÄÌìÊý¡£
Èç¹û²»ÊÇÕûÊýÌ죬·µ»ØÖµ¾Í´øÓÐСÊý¡£
Õâ¸öÔËËã·û¾­³£ÓÃÀ´¼ì²âÎļþÊÇ·ñ¹ýÆÚ£¬±ÈÈçÅжÏÎļþ¾àÀëÉÏ´ÎÐÞ¸ÄÊÇ·ñ³¬¹ýÁË3Ì죬
Èç¹û³¬¹ý¾Í½«Æäɾ³ý¡£µ«ÊÇ£¬ÄãÊÇ·ñÕæÕýÀí½â -C µÄ¹¤×÷Ô­ÀíÄØ£¿
ºÎνctime ......

linux c and asm ͬʱʹÓÃ

from: ¡¶×Ô¼º¶¯ÊÖд²Ù×÷ϵͳ¡·
1. ÖжÏÏòÁ¿±í ²é¿´ linux/init/main.c in http://lxr.linux.no/#linux+v2.6.32/init/main.c
2.
; [root@XXX XXX]# nasm -f elf foo.asm -o foo.o
; [root@XXX XXX]# gcc -c bar.c -o bar.o
; [root@XXX XXX]# ld -s foo.o bar.o -o foobar
; [root@XXX XXX]# ./foobar
; the 2nd on ......

C/C++ѧϰӦ¸Ã×¢ÒâµÄ¼¸¸öϸ½Ú


¸øÎÒÃÇÉÏASP.NETµÄÀÏʦÔÚ½²½âC#µÄʱºò£¬×ÜÊÇҪѯÎÊÎÒÃÇC#ºÍC/C++¼äµÄ²»Í¬Ö®´¦£¬»òÕßһЩϸ½ÚÎÊÌ⣬µ«ÊÇÆ½Ê±²»ÔõôעÒ⣬»¹Õæ°ÑÎÒÃǸøÎʵ½ÁË£¡£¡
Ò».²»¾­¹ýÖмä±äÁ¿ÔõÑù½»»»Á½¸öÊý¾Ý int a=25;b=10;
½â·¨: a=a+b;//35
        b=a-b;//25
      ......

C/C++ Îļþ¶Áд²Ù×÷×ܽá(1)


ÔÚ±à³ÌµÄ¹ý³ÌÖУ¬ÎļþµÄ²Ù×÷ÊÇÒ»¸ö¾­³£Óõ½µÄÎÊÌ⣬ÔÚC++BuilderÖУ¬¿ÉÒÔʹÓöàÖÖ·½·¨¶ÔÎļþ²Ù×÷£¬ÏÂÃæÎҾͰ´ÒÔϼ¸¸ö²¿·Ö¶Ô´Ë×÷Ïêϸ½éÉÜ£¬¾ÍÊÇ£º
1¡¢»ùÓÚCµÄÎļþ²Ù×÷£»
2¡¢»ùÓÚC++µÄÎļþ²Ù×÷£»
3¡¢»ùÓÚWINAPIµÄÎļþ²Ù×÷£»
4¡¢»ùÓÚBCB¿âµÄÎļþ²Ù×÷£»
5¡¢ÌØÊâÎļþµÄ²Ù×÷¡£
¡¡
Ò¼¡¢»ùÓÚCµÄÎļþ²Ù×÷
¡¡¡¡ÔÚANSI CÖÐ ......

C ÓïÑÔÈëÃÅÖ¸µ¼

C ÓïÑÔ
  
CÓïÑÔÊÇÒ»ÖÖ¼ÆËã»úÓïÑÔ£¬¼òµ¥µÄ½²ËüÊÇÎÒÃǺͼÆËã»ú¹µÍ¨µÄÒ»ÖÖ¹¤¾ß£¬Í¨¹ýÕâÖÖÓïÑÔÎÒÃÇ¿ÉÒÔÒýµ¼¼ÆËã»úÈÃËü°´ÕÕÎÒÃǵÄÒâԸȥ×öÊ£¬À´ÎªÈËÀàÌṩ·þÎñ¡£±ÈÈçÄãµçÄÔÖеÄÒôÀÖ²¥·ÅÆ÷¡¢word¡¢qq¡¢Ñ¸À×£¨µ±È»ÕâЩÈí¼þµÄ±àд»¹Ó¦ÓÃÁËÇÒËû¹¤¾ß£©¡£
CÓïÑÔ¿ÉÒÔ×÷Ϊ¹¤×÷ϵͳÉè¼ÆÓïÑÔ£¬±àдϵͳӦÓóÌÐò£¬Ò²¿ÉÒÔ×÷Î ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ