Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

(ת)C/C++ÖеÄÈÕÆÚºÍʱ¼ä time_tÓëstruct tmת»»

(ת)C/C++ÖеÄÈÕÆÚºÍʱ¼ä time_tÓëstruct tmת»»
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
ÔÚ C/C++ÖУ¬¶Ô×Ö·û´®µÄ²Ù×÷ÓкܶàÖµµÃ×¢ÒâµÄÎÊÌ⣬ͬÑù£¬C/C++¶Ôʱ¼äµÄ²Ù×÷Ò²ÓÐÐí¶àÖµµÃ´ó¼Ò×¢ÒâµÄµØ·½¡£×î½ü£¬ÔÚ¼¼ÊõȺÖÐÓкܶàÍøÓÑÒ²¶à´ÎÎʵ½¹ý C++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¯Ê


Ïà¹ØÎĵµ£º

c sharp ÎÞ·¨µ÷ÓÃdll

Ô­À´ÊDZ»µ÷ÓõÄdllÓÖµ÷ÓÃÁËÆäËûµÄdll
µÚ¶þ¸ödllÍü¼ÇÁË¿¼µ½¹¤×÷Ŀ¼ÏÂ
µ¼ÖÂÁËc sharpһֱûÄܼÓÔØdll¡£±¨´í£ºÕÒ²»µ½dll
ÏÖÔÚÏëÆðÀ´£¬ËùνµÄdllÕÒ²»µ½£¬Ó¦¸ÃÊÇÕÒ²»µ½µÚ¶þ¸ödll
ÏûºÄʱ¼ä2¸öСʱ£¬ÐÄÇéÉÔ΢ÓеãÊÜÓ°Ïì ......

ת£ºLinuxϽøÐÐMYSQLµÄC++±à³ÌÆð²½ÊÖ¼Ç


LinuxϽøÐÐMYSQLµÄC++±à³ÌÆð²½ÊÖ¼Ç
Ê×ÏÈ°²×°±ØÐèµÄ¿ª·¢°ü
sudo apt-get install gcc g++ libgcc1 libg++ make gdb
°²×°MYSQLµÄCÓïÑÔ¿ª·¢°ü
sudo apt-get install libmysql++-dev libmysql++2c2a libmysqlclient15-dev libmysqlclient15off
......

50¸öC/C++Ô´ÂëÍøÕ¾

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 ......

C/C++/VC MFC char & int study

²âÊÔ´úÂëÒ»£¨VC6.0¡¢C-code£©£º
#include <stdio.h>
void main()
{
 int aa;
 unsigned char j1,j2;
 aa=j1=j2=0;
 aa=49;
 j1=aa;
 printf("j1=%d \n",j1);
 j2=aa;
 printf("j2=%c \n",j2);
}
¡¾·ÖÎö¡¿£º
[1]ÕýÈçËùÏëÏóµÄÊä³ö½á¹û£º
    j1 ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ