C/C++ÖеÄÈÕÆÚºÍʱ¼ä
ͻ񻣼
±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£©£¬clock tick£¨Ê±ÖÓ¼Æʱµ¥Ôª£©
1£®¸ÅÄî
ÔÚC/C++ÖУ¬¶Ô×Ö·û´®µÄ²Ù×÷ÓкܶàÖµµÃ×¢ÒâµÄÎÊÌ⣬ͬÑù£¬C/C++¶Ôʱ¼äµÄ²Ù×÷Ò²ÓÐÐí¶àÖµµÃ´ó¼Ò×¢ÒâµÄµØ·½¡£×î½ü£¬ÔÚ¼¼ÊõȺÖÐÓкܶàÍøÓÑÒ²¶à´ÎÎʵ½¹ýC++ÓïÑÔÖжÔʱ¼äµÄ²Ù×÷¡¢»ñÈ¡ºÍÏÔʾµÈµÈµÄÎÊÌâ¡£ÏÂÃ棬ÔÚÕâƪÎÄÕÂÖУ¬±ÊÕß½«Ö÷Òª½éÉÜÔÚC/C++ÖÐʱ¼äºÍÈÕÆÚµÄʹÓ÷½·¨.
ͨ¹ýѧϰÐí¶àC/C++¿â£¬Äã¿ÉÒÔÓкܶà²Ù×÷¡¢Ê¹ÓÃʱ¼äµÄ·½·¨¡£µ«ÔÚÕâ֮ǰÄãÐèÒªÁ˽âһЩ“ʱ¼ä”ºÍ“ÈÕÆÚ”µÄ¸ÅÄÖ÷ÒªÓÐÒÔϼ¸¸ö£º
Coordinated Universal Time£¨UTC£©£ºÐµ÷ÊÀ½çʱ£¬ÓÖ³ÆΪÊÀ½ç±ê׼ʱ¼ä£¬Ò²¾ÍÊÇ´ó¼ÒËùÊìÖªµÄ¸ñÁÖÍþÖαê׼ʱ¼ä£¨Greenwich Mean Time£¬GMT£©¡£±ÈÈ磬ÖйúÄڵصÄʱ¼äÓëUTCµÄʱ²îΪ+8£¬Ò²¾ÍÊÇUTC+8¡£ÃÀ¹úÊÇUTC-5¡£
Calendar Time£ºÈÕÀúʱ¼ä£¬ÊÇÓÓ´ÓÒ»¸ö±ê׼ʱ¼äµãµ½´ËʱµÄʱ¼ä¾¹ýµÄÃëÊý”À´±íʾµÄʱ¼ä¡£Õâ¸ö±ê׼ʱ¼äµã¶Ô²»Í¬µÄ±àÒëÆ÷À´Ëµ»áÓÐËù²»Í¬£¬µ«¶ÔÒ»¸ö±àÒëϵͳÀ´Ëµ£¬Õâ¸ö±ê׼ʱ¼äµãÊDz»±äµÄ£¬¸Ã±àÒëϵͳÖеÄʱ¼ä¶ÔÓ¦µÄÈÕÀúʱ¼ä¶¼Í¨¹ý¸Ã±ê׼ʱ¼äµãÀ´ºâÁ¿£¬ËùÒÔ¿ÉÒÔ˵ÈÕÀúʱ¼äÊÇ“Ïà¶Ôʱ¼ä”£¬µ«ÊÇÎÞÂÛÄãÔÚÄÄÒ»¸öʱÇø£¬ÔÚͬһʱ¿Ì¶Ôͬһ¸ö±ê׼ʱ¼äµãÀ´Ëµ£¬ÈÕÀúʱ¼ä¶¼ÊÇÒ»ÑùµÄ¡£
epoch£ºÊ±¼äµã¡£Ê±¼äµãÔÚ±ê×¼C/C++ÖÐÊÇÒ»¸öÕûÊý£¬ËüÓôËʱµÄʱ¼äºÍ±ê׼ʱ¼äµãÏà²îµÄÃëÊý£¨¼´ÈÕÀúʱ¼ä£©À´±íʾ¡£
clock tick£ºÊ±ÖÓ¼Æʱµ¥Ôª£¨¶ø²»°ÑËü½Ð×öʱÖӵδð´ÎÊý£©£¬Ò»¸öʱÖÓ¼Æʱµ¥ÔªµÄʱ¼ä³¤¶ÌÊÇÓÉCPU¿ØÖƵġ£Ò»¸öclock tick²»ÊÇCPUµÄÒ»¸öʱÖÓÖÜÆÚ£¬¶øÊÇC/C++µÄÒ»¸ö»ù±¾¼Æʱµ¥Î»¡£
ÎÒÃÇ¿ÉÒÔʹÓÃANSI±ê×¼¿âÖеÄtime.hÍ·Îļþ¡£Õâ¸öÍ·ÎļþÖж¨ÒåµÄʱ¼äºÍÈÕÆÚËùʹÓõķ½·¨£¬ÎÞÂÛÊÇÔڽṹ¶¨Ò壬»¹ÊÇÃüÃû£¬¶¼¾ßÓÐÃ÷ÏÔµÄCÓïÑÔ·ç¸ñ¡£ÏÂÃ棬ÎÒ½«ËµÃ÷ÔÚC/C++ÖÐÔõÑùʹÓÃÈÕÆÚµÄʱ¼ä¹¦ÄÜ¡£
2£® ¼Æʱ
C/C++ÖеļÆʱº¯ÊýÊÇclock()£¬¶øÓëÆäÏà¹ØµÄÊý¾ÝÀàÐÍÊÇclock_t¡£ÔÚMSDNÖУ¬²éµÃ¶Ôclockº¯Êý¶¨ÒåÈçÏ£º
clock_t clock( void );
Õâ¸öº¯Êý·µ»Ø´Ó“¿ªÆôÕâ¸ö³ÌÐò½ø³Ì”µ½“³ÌÐòÖе÷ÓÃclock()º¯Êý”ʱ֮¼äµÄCPUʱÖÓ¼Æʱµ¥Ôª£¨clock tick£©Êý£¬Ô
Ïà¹ØÎĵµ£º
CÓïÑÔÖеÄÔËËã·û¼°ÓÅÏȼ¶ÊǺÜÖØÒªµÄ£¬Ò»¶¨ÒªÀÃÊìÓÚÐÄ£¡
ÓÅÏȼ¶ ÔËËã·û º¬Òå ÒªÇóÔËËã¶ÔÏó¸öÊý ½áºÏ 1 ()
[]
->
. À¨ºÅÔËËã·û
ϱêÔËËã·û
½á¹¹Ìå³ÉÔ±ÔËËã·û ......
C/C++ÊÇ×îÖ÷ÒªµÄ±à³ÌÓïÑÔ¡£ÕâÀïÁгöÁË50ÃûÓÅÐãÍøÕ¾ºÍÍøÒ³Çåµ¥£¬ÕâЩÍøÕ¾Ìṩc/c++Ô´´úÂë¡£Õâ·ÝÇåµ¥ÌṩÁËÔ´´úÂëµÄÁ´½ÓÒÔ¼°ËüÃǵÄС˵Ã÷¡£ÎÒÒѾ¡Á¦°üÀ¨×î¼ÑµÄC/C++Ô´´úÂëµÄÍøÕ¾¡£Õâ²»ÊÇÒ»¸öÍêÕûµÄÇåµ¥£¬ÄúÓн¨Òé¿ÉÒÔÁªÏµÎÒ£¬ÎÒ½«»¶ÓÄúµÄ½¨Ò飬ÒÔ½øÒ»²½¼ÓÇ¿Õâ·½ÃæµÄÇåµ¥¡£
1¡¢http://snippets.dzone.com/tag/c/ --ÊýÒÔǧ¼Æ ......
ÍøÉÏÒ»µÀ½ðɽµÄÃæÊÔÌ⣺
http://topic.csdn.net/u/20100524/14/0eff992a-2849-4db6-bdaa-d4a200e79b7c.html
Çë·Ö±ðÓÃC++µÄÃæÏò¶ÔÏóºÍ·ºÐÍ»úÖÆ£¬±àдʵÏÖTemplate MethodģʽµÄʾÀý´úÂ룬²¢±È½ÏÁ½ÖÖ·½Ê½¸÷×ÔµÄÓÅȱµã¡£
ÓÃÐ麯ÊýʵÏÖTemplate MethodµÄ·½Ê½¾Í²»¶à˵ÁË¡£Ó÷ºÐ͵ķ½Ê½ÊµÏÖ¶à̬ÔÚATLÀïÃæÓдóÁ¿µÄÓõ½£¡
·ºÐ͵ ......
1. ʹÓÃTCHARÀàÐÍ£¬¶¨ÒåÔÚtchar.hÖÐ
#include <tchar.h>
#include <stdio.h>
int main()
{
TCHAR s[] = "Äã";
printf("%s \n",s);
return 0;
}
2.¹ØÓÚC++ÖÐÎÄ×Ö·ûµÄ´¦Àí
Ò» ÒýÈëÎÊÌâ
´úÂë wchar_t a[3]=L”Öйú”£¬±àÒëʱ³ö´í£¬³ö´íÐÅϢΪ£ºÊý×éÔ½½ç¡£µ«wchar_ ......
Ò». ÔÚcÖзÖΪÕ⼸¸ö´æ´¢Çø
1.Õ» - ÓɱàÒëÆ÷×Ô¶¯·ÖÅäÊÍ·Å
2.¶Ñ - Ò»°ãÓɳÌÐòÔ±·ÖÅäÊÍ·Å£¬Èô³ÌÐòÔ±²»ÊÍ·Å£¬³ÌÐò½áÊøʱ¿ÉÄÜÓÉOS»ØÊÕ
3.È«¾ÖÇø£¨¾²Ì¬Çø£©£¬È«¾Ö±äÁ¿ºÍ¾²Ì¬±äÁ¿µÄ´æ´¢ÊÇ·ÅÔÚÒ»¿éµÄ£¬³õʼ»¯µÄÈ«¾Ö±äÁ¿ºÍ¾²Ì¬±äÁ¿ÔÚÒ»¿éÇøÓò£¬Î´³õʼ»¯µÄÈ«¾Ö±äÁ¿ºÍδ³õʼ»¯µÄ¾²Ì¬±äÁ¿ÔÚÏàÁÚµÄÁíÒ»¿éÇøÓò¡£- ³ÌÐò½áÊøÊÍ·Å
4.ÁíÍ ......