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

C ѧϰ±Ê¼Ç£º ÒÆÎ»²Ù×÷Á·Ï°¡£

#include <stdio.h>
unsigned int reverse_bits(unsigned int value)
{
    unsigned int answer;
    unsigned int i;
    answer = 0;
   
    for(i=1;i!=0;i<<=1){ //´ËÑ­»·¿ÉÒÔºöÂÔ»úÆ÷µÄ²îÒì¡£64λºÍ32λ½Ô¿ÉÓã¬ÔöÇ¿´Ë´úÂëµÄ¿ÉÒÆÖ²ÐÔ
        answer <<=1;
        if(value & 1)
            answer |= 1;
        value >>=1;
    }
    return answer;
}
int main(void)
{
    unsigned int get_answer=reverse_bits(13);
    int i=31;
    char t;
    while(i)
    {
        t ='0'+ ((get_answer >> i) & 1);
        printf("%c",t);
        i--;
    }
}
<<CºÍÖ¸Õë>> µÚ5ÕÂÁ·Ï°Ìâ¡£
Linux 2.6 kernelÖеÄset_bit²Ù×÷£º
ÐèÒª¿¼ÂÇ»úÆ÷ÊÇ32λ»¹ÊÇ64λµÄ¼ÆËã»ú¡£
static inline void set_bit(int nr, volatile unsigned long *addr)
{
    int *a = (int *)addr;
    int mask;
    //unsigned long flags;
    a += nr >> 5; 
    mask = 1 << (nr & 0x1f);
    //local_irq_save_hw(flags);
    *a |= mask;
    //local_irq_restore_hw(flags);
}


Ïà¹ØÎĵµ£º

B/S ÓëC/S µÄÇø±ð


B/S½á¹¹£¬¼´Browser/Server£¨ä¯ÀÀÆ÷/·þÎñÆ÷£©½á¹¹£¬ÊÇËæ×ÅInternet¼¼ÊõµÄÐËÆð£¬¶ÔC/S½á¹¹µÄÒ»Öֱ仯»òÕ߸ĽøµÄ½á¹¹¡£ÔÚÕâÖÖ
½á¹¹Ï£¬Óû§½çÃæÍêȫͨ¹ýWWWä¯ÀÀÆ÷ʵÏÖ£¬Ò»²¿·ÖÊÂÎñÂß¼­ÔÚǰ¶ËʵÏÖ£¬µ«ÊÇÖ÷ÒªÊÂÎñÂß¼­ÔÚ·þÎñÆ÷¶ËʵÏÖ£¬ÐγÉËùν3-tier½á¹¹¡£B/S½á¹¹£¬Ö÷ÒªÊÇ
ÀûÓÃÁ˲»¶Ï³ÉÊìµÄWWWä¯ÀÀÆ÷¼¼Êõ£¬½áºÏä¯ÀÀÆ÷µÄ¶àÖ ......

c³ÌÐòµÄ±äÁ¿¶¨Ò屨ÐëÔÚËùÓк¯Êý֮ǰ£¿£¡

ÓÃvc6н¨ÁËÒ»¸öwin32µÄ¿ØÖÆÌ¨³ÌÐò£¬µ÷ÊÔÒ»¸öÖ±½Ó²åÈëÅÅÐòµÄС³ÌÐò£¬Îļþ¶¨ÒåΪ.cÎļþ£¬¶ø²»ÊÇÒ»°ãʹÓõÄ.cppÎļþ£¬´úÂë¶ÎÈçÏ£º
#include <stdio.h>
void inst(int* x,int n)
{
int i,j,t;
for(i=1; i<n; i++) /* i±íʾ²åÈë´ÎÊý£¬¹²½øÐÐn-1´Î²åÈë*/
{
t = x[i];
for(j=i-1; j> ......

C ÖÐ extern ºÍ static

CÓïÑÔÖУº
extern £ºextern£¨ÍⲿÒýÓã©¿ÉÒÔÖÃÓÚ±äÁ¿»òÕߺ¯Êýǰ£¬ÒÔ±êʾ±äÁ¿»òº¯ÊýµÄ¶¨ÒåÔÚ±ðµÄÎļþÖУ¬ÔÚÒ»¸öÎļþÖÐÓõ½µÄexternÕâЩ±äÁ¿»òº¯ÊýÊÇÍâÀ´µÄ£¬²»ÊDZ¾Îļþ¶¨ÒåµÄ£¬Ìáʾ±àÒëÆ÷Óöµ½´Ë±äÁ¿ºÍº¯ÊýʱÔÚÆäËûÄ£¿éÖÐѰÕÒÆä¶¨Òå¡£×¢Ò⣬ֻÓÐÆäËûÎļþÖеÄÈ«¾Ö±äÁ¿²ÅÄܱ»ÆäËûÎļþËùextern¡£
extern int val;
×¢£º
  ......

CÊäÈëÊä³ö

×ÛÊö
¿´Ò»ÏÂÊäÈë²Ù×÷µÄÔ­Àí£¬
³ÌÐòµÄÊäÈë¶¼½¨ÓÐÒ»¸ö»º³åÇø£¬¼´ÊäÈ뻺³åÇø¡£Ò»´ÎÊäÈë¹ý³ÌÊÇÕâÑùµÄ£¬µ±Ò»´Î¼üÅÌÊäÈë½áÊøÊ±»á½«ÊäÈëµÄÊý¾Ý´æÈëÊäÈ뻺³åÇø£¬¶øcinµÈÊäÈëÊä³öº¯ÊýÖ±½Ó´ÓÊä
È뻺³åÇøÖÐÈ¡Êý¾Ý¡£ÕýÒòΪcinµÈÊäÈëÊä³öº¯ÊýÊÇÖ±½Ó´Ó»º³åÇøÈ¡Êý¾ÝµÄ£¬ËùÒÔÓÐʱºòµ±»º³åÇøÖÐÓвÐÁôÊý¾Ýʱ£¬cinº¯Êý»áÖ±½ÓÈ¡µÃÕâЩ²ÐÁôÊý¾ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ