C/C++³ÌÐòÔ±±Ø¶ÁµÄÊ®±¾Êé
ÔÚGmail TopLanguage Group Öп´µ½Ò»ÆªÎÄÕ“C/C++³ÌÐòÔ±±Ø¶ÁµÄÊ®±¾Ê飨ÉÏ£©”£¬´ó¼ÒµÄÌÖÂÛ¶¼ºÜ¼¤Àø£¬´ó¼Ò¶¼¾õµÃÕâÆªÎÄÕÂдµÃºÜ°ô£¬ÎÒÏëÔÚGroupÀïµÄÅóÓѶ¼ÄÜÔÚLookgirlµÄÕâÆªÎÄÕÂÀï»ñÒæ²»ÉÙ£¬Îª´Ë¶·µ¨ÔÚ´Ë×ªÔØ¸ÃÎÄ£¬¹©¸ü¶àÅóÓѽ»Á÷¡¢Ñ§Ï°¡£
C/C++³ÌÐòÔ±±Ø¶ÁµÄÊ®±¾Ê飨ÉÏ£©
Õâ¸öÌâÄ¿´óµÄÓÐЩÀëÆ×£¬Êµ»°Ëµ£¬Ö»ÊÇÏëÍÆ¼öÒ»ÏÂ×Ô¼º¾õµÃºÜºÃ¡¢ÖµµÃÊղصÄһЩ¼¼Êõ·½ÃæµÄͼÊé¡£Èç¹û²»ÊdzÌÐòÔ±£¬»òÕß¹ØÐĵķ½ÏòÊÇÍøÒ³¿ª·¢¡¢Êý¾Ý¿â¿ª·¢£¬»òÕßÖ»ÊÇÏëÁ˽âһϿª·¢Á÷³Ì£¬ÕâЩÊé²»¶¼ÊÇÊʺÏÄ㣬µ«Ò²ºÜÖµµÃÊÕ²ØÁË¡£
ÕâÆªÎÄ×ÖµÄÕë¶ÔÄ¿±êÊÇ£¬Î¢ÈíÆ½Ì¨ÏµÄc/c++³ÌÐòÔ±£¬Ñ§¹ý¼ÆËã»ú»ù´¡Ñ§¿Æ£¬ÓÐÒ»¶¨µÄÓ¢ÓïÔĶÁÄÜÁ¦¡£½¨Ò鹺ÂòµÄ˳ÐòÒ²ÊÇ´ÓÉÏÖÁÏ¡£
£¨1£©½¨Òé´ó¼ÒÔĶÁµÄµÚÒ»±¾ÊéÊÇ¡¶±àÂëµÄ°ÂÃØ¡·£¨Ó¢ÎÄÃû¡¶code¡·£©£¨±¾ÊéÓÉ»úе¹¤Òµ³ö°æÉ绪Õ¹«Ë¾³ö°æ£©£¬Õâ±¾ÊéÖÐÎİæÓ¦¸ÃÒѾ¾ø°æÁË£¬µ«ºÃÏñÓÐÓ¢ÎÄÓ°Ó¡°æ¡£Õâ±¾ÊéûÓн²¸ÃÈçºÎ±à³Ì£¬ÈçºÎдһ¸öhello world¡£ËüÉîÈëdz³öµÄ½éÉÜÁ˼ÆËã»úÊÇÈçºÎ×é³ÉµÄ£¬±ÈÈç¶þ½øÖÆ£¬±ÈÈçÂß¼Ãŵç·µÄʵÏÖ£¬¶¼ÊǺÜdzÏԵġ£¿´ÁËÕâ±¾Ê飬»á¶Ô¼ÆËã»úÓиöÖªÆäËùÒÔÈ»µÄÁ˽⣬Ҳ¾ÍÊÇ»úÆ÷ÈçºÎʵÏÖµÄÒ»¼ÓÒ»µÈÓÚ¶þ£¬ÈçºÎÄÜÖ´ÐгÌÐò¡£¡¶±àÂëµÄ°ÂÃØ¡·ÊǼÆËã»úרҵ»òÕßÊdzõÖиßÖжԼÆËã»ú¸ÐÐËȤѧÉú£¬Ó¦¸ÃÒ»ÉÏѧ¾Í¶ÁµÄÒ»±¾Êé¡£
£¨2£©µÚ¶þ±¾Ò²Êǽ¨Òé´ó¼Ò¿´µ½ÁËÁ¢¿ÌÂòÏÂÀ´£¬±£Ö¤ÎïÓÐËùÖµ£¬¾ÍÊÇ¡¶³ÌÐòÉè¼ÆÊµ¼ù¡·£¨Ó¢ÎÄÃûThe Practice of Programming£©£¨±¾ÊéÓÉ»úе¹¤Òµ³ö°æÉ绪Õ¹«Ë¾³ö°æ£©¡£ÓÐÁËÕâ±¾Ê飬»ù±¾ÉÏ¡¶´úÂë´óÈ«¡·¡¢¡¶³ÌÐòÔ±ÐÞÁ¶Ö®µÀ¡·Õ⼸±¾ºóÃæÍÆ¼öµÄÊé¿ÉÒÔ²»ÂòÁË£¬ÒòΪ¾«»ª»ù±¾É϶¼Å¨Ëõµ½Õâ±¾ÊéÀïÃæ£¬µ±È»£¬²»Í¬µÄ×÷Õßд³öÀ´µÄ»¹ÊDz»Ò»Ñù£¬Èç¹ûÓÐÇ®£¬»¹ÊǶ¼ÂòÁË×îºÃ¡£¡¶³ÌÐòÉè¼ÆÊµ¼ù¡·µÄÁ½Î»×÷ÕßBrian W.Kernigham / Rob Pike£¬ÔÚ¼ÆËã»úÁìÓò£¬¾ÍÊÇ´óʦ¼¶µÄÈËÎ¸ßɽÑöÖ¹£¬Ð´³öÈç´ËͨË×Ò×¶®µÄ¼ÆËã»ú¹¤³Ìʵ¼ùÊ飬ÈÃÎÒ»¹ÄÜ˵ʲôÑöĽµÄ»°°¡¡£Äã²»ÖªµÀËûÃÇÊÇË£¿È¥ËÑwiki °É¡£ÀïÃæÃ¿Ò»Õ½ڶ¼·Ç³£¾µä£¬ÉõÖÁÿÕºóÃæÍÆ¼öÑÓÉìÔĶÁµÄÊé¼®£¬¶¼ÊǾµäÖеľµä¡£Ò»¶¨ÒªÂýÂý¶Á·´¸´¶Á£¬Èç¹ûÕâ±¾Êé¿´ÍêÁËÒԺ󣬻ù±¾ÉϾÍÊÇÒ»¸ö¼ÆËã»úÖм¶±à³ÌˮƽÁË¡£
£¨3£©µÚÈý±¾Êé±È½ÏÄÑÑ¡ÔñһЩ£¬»¹ÊÇÍÆ¼öÕâ±¾ºÃÁË¡¶C³ÌÐòÉè¼ÆÓïÑÔ£¬µÚ2°æ¡·£¬Ò²¾ÍÊÇ´«ËµÖеÄK&R£¬Èç¹ûÄãÊÇÒ»¸ö¼ÆËã»úרҵµÄѧÉú£¬»¹Ã»ÓÐÕâ±¾Ê飬ÄÇÄãÔÚѧУÀïѧÁËʲô¾ÍºÜÖµµÃ»³ÒÉ¡£Õâ±¾Êé272Ò³£¬Ã¿Ò³¶¼ºÜ¾µä£¬»ù±¾ÉÏÄãÅöµ½µÄËùÓÐcÓïÑÔÎÊÌâÔÚÕâ±¾±¡±¡µÄСÊéÀï¶¼ÓÐÉæ¼°£¬µ«ÊÇÏÞÓÚÆª·ù£¬Ó
Ïà¹ØÎĵµ£º
http://www.trendcaller.com/2009/05/hadoop-should-target-cllvm-not-java.html
Sunday, May 10, 2009
Hadoop should target C++/LLVM, not Java (because of watts)
< type="text/javascript">
digg_url="http://www.trendcaller.com/2009/05/hadoop-should-target-cllvm-not-java.html";
Over the years, ......
ÄÚºËÆô¶¯µÄÏÖÔÚÒѾÊÇ¿ªÊ¼Ö´Ðк¯Êýstart_kernelº¯ÊýÁË¡£start_kernelº¯ÊýÔÚinit/main.cÖж¨Òå¡£start_kernelº¯ÊýÖ»ÊÇÍê³É
ÏàÓ¦µÄ½á¹¹µÄ³õʼ»¯ÈÎÎñ¡£
printk(KERN_NOTICE);
printk(linux_banner);
setup_arch(&command_line);
ÔÚubootµÄÒ»Ö±¹ý³ÌÖУ¬uboo ......
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar num;
void main()
{
TMOD=0x01;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
EA=1;
ET0=1;
TR0=1;
P1=0xFF;
while(1);
}
void T0_time() interrupt 1
{
  ......
C/S Óë B/S
£±£®Ó²¼þ»·¾³²»Í¬:
¡¡¡¡C/S Ò»°ã½¨Á¢ÔÚרÓõÄÍøÂçÉÏ, С·¶Î§ÀïµÄÍøÂç»·¾³, ¾ÖÓòÍøÖ®¼äÔÙͨ¹ýרÃÅ·þÎñÆ÷ÌṩÁ¬½ÓºÍÊý¾Ý½»»»·þÎñ.
¡¡¡¡B/S ½¨Á¢ÔÚ¹ãÓòÍøÖ®ÉϵÄ, ²»±ØÊÇרÃŵÄÍøÂçÓ²¼þ»·¾³,ÀýÓëµç»°ÉÏÍø, ×âÓÃÉ豸. ÐÅÏ¢×Ô¼º¹ÜÀí. ÓбÈC/S¸üÇ¿µÄÊÊÓ¦·¶Î§, Ò»°ãÖ»ÒªÓвÙ×÷ϵͳºÍä¯ÀÀÆ÷¾ÍÐÐ&n ......
1.д³öÁ½¸öº¯Êý£¬·Ö±ðÇóÁ½¸öÕûÊýµÄ×î´ó¹«Ô¼ÊýºÍ×îС¹«±¶Êý£¬ÓÃÖ÷º¯Êýµ÷ÓÃÕâÁ½¸öº¯Êý£¬²¢Êä³ö½á¹û¡£Á½¸öÕûÊýÓɼüÅÌÊäÈë¡£
#include<stdio.h>
int gcd(int,int);
int lcm(int,int);
int gcd(int m,int n)
{
if(m%n==0)
return n;
else
return gcd(n,m%n);
}
int lcm(int m,int n)
{
return m*n/(gc ......