C³ÌÐò£º¶¨Òåºê´òӡijλÓò¹²ÓжàÉÙλ
#include <stdio.h>
#define bits(p, d) { \
int _tmp=p->d, _bits=0; \
for (p->d=1; p->d; p->d<<=1) \
_bits++; \
p->d=_tmp; \
printf("%s->%s has %d bits", #p, #d, _bits); \
}
typedef struct _s{
int a:4;
} S;
int main()
{
S tmp, *s = &tmp;
bits(s,a);
}
/* Êä³ö£º s->a has 4 bits */
Ïà¹ØÎĵµ£º
CûÓÐÀà
ÕâÈÃÈËºÜÆ£±¹
¶ÔÏóµÄ˵·¨ºÜʱ÷Ö
²»¾ÍÊǼ̳зâ×°×éºÏÈËÈË»á
ÓÒ×ßÊÇC++£¬Õâ¸ö´óÖÚ¶¼ÊìϤËü
×ó×ß¾ÍÊÇobjective-c£¬¶ãÔÚÆ§¾²Æ§¾²µÄÂó½ðËþ
±¾ÊÇͬ¸ùÉúµÄC
ÈçºÎ¸ß¾ÙÃæÏò¶ÔÏóµÄ´óÆì
Çóͬ´æÒì±êÐÂÁ¢ÒìÇÒÌýһһϸ·ÖÇå
¶ÔÏóµÄC
ÊDz»Í¬µÄC
ÀàµÄ´¦ÀíÓëÖÚ²»Í¬Öصã񻂿·Ö
²»Öظ´ÊÇÎҵĿÚÍ·ìø
ÈκÎʱºòÎÒֻ˵һ´Î¸æËß ......
1.ÒýÑÔ
¡¡¡¡±¾ÎĵÄд×÷Ä¿µÄ²¢²»ÔÚÓÚÌṩC/C++³ÌÐòÔ±ÇóÖ°ÃæÊÔÖ¸µ¼£¬¶øÖ¼ÔÚ´Ó¼¼ÊõÉÏ·ÖÎöÃæÊÔÌâµÄÄÚº¡£ÎÄÖеĴó¶àÊýÃæÊÔÌâÀ´×Ô¸÷´óÂÛ̳£¬²¿·ÖÊÔÌâ½â´ðÒ²²Î¿¼ÁËÍøÓѵÄÒâ¼û¡£
¡¡¡¡Ðí¶àÃæÊÔÌâ¿´ËÆ¼òµ¥£¬È´ÐèÒªÉîºñµÄ»ù±¾¹¦²ÅÄܸø³öÍêÃÀµÄ½â´ð¡£ÆóÒµÒªÇóÃæÊÔÕßдһ¸ö×î¼òµ¥µÄstrcpyº¯Êý¶¼¿É¿´³öÃæÊÔÕßÔÚ¼¼ÊõÉϾ¿¾¹´ïµ½Á ......
ÌâÍâÆª£ºµ¥Ôª²âÊÔÄÑÓÚ³¤ÆÚ¼á³ÖµÄÔÒòÓë½â¾ö̽ÌÖ
ÉÏһƪ¡¶µ¥Ôª²âÊÔÐ§Òæ¡·£¬ÓÐÍøÓÑÆÀÂÛ˵£º“µ¥Ôª²âÊԵĺô¦»ù±¾ÈËÈËÖªµÀ£¬¾ÍÊÇÄѼá³Ö£¡”¡£ÕâÒ»ÆÀÂÛÑÏÖØÌáÐÑÁËÎÒ£¬²»´í£¬“ÄѼá³Ö”Ò²ÊÇÒ»¸öÆÕ±éÏÖ×´¡£Èç¹û²»Äܼá³Ö£¬ÄÇÒ»Çж¼Êǰ״Òò´Ë£¬ÕâÀï²åÈëÒ»¸öÌâÍâÆª£¬Ì½ÌÖµ¥Ôª²âÊÔÄÑÓÚ³¤Æ ......
ÓúêʵÏÖÒ»¸öswap¹¦ÄÜ
#include <stdio.h>
#include <stdlib.h>
#define SWAP( TYPE,ARG1,ARG2 ) \
void TYPE##Swap( TYPE *p, TYPE *q ) \
{ \
TYPE tmp = *p; \
*p = *q; \
*q = tmp; \
} \
TYPE##Swap(&ARG1,&ARG2 ......
googletest C/C++ ²âÊÔ¿ò¼Ü·Ç³£ºÃÓ㬽éÉܼ°ÏÂÔØÇë¿´ http://code.google.com/p/googletest/
//============================================================================
// ʹÓà googletest ²âÊÔ¿ò¼Ü
//============================================================================
// Returns n! ......