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       1. ÅжÏÊÇ·ñΪ¿Õ£¬Èç¹ûΪ¿Õ£¬·µ»ØNULL
       2. ·ñÔò˵Ã÷ÖÁÉÙÓÐÒ»¸ö½Úµã£¬ÄÇô
             p2Ö¸Ïò×îºóÒ»¸ö½Úµã£¬p1Ö¸Ïòǰһ¸ö½Úµã£¬
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              2£©P2 ÍùÇ°ÒÆ£¬p2=p1;
              3£©P1 ÍùÇ°ÒÆ£¬p1=p1->next¡£
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struct Node
{
int num;
Node * next;
};
Node * reverse(Node * head)
{
if(head==NULL)
{
return NULL;
}
Node * p1,p2;
p2=head;
p1=head->next;
p2->next=NULL;
while(p1)
{
p1->next=p2;
p2=p1;
p1=p1->next;
}
return p2;
}


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scanf("%c")

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×îºóͨ¹ý¼Ógetchar();ACͨ¹ý¡£ ......

ANSI C¶ÁÊé±Ê¼ÇϵÁÐÖ®×Ö·û¼¯Æª µÚËÄÕ ×Ö½ÚÐò

"endian"Õâ¸ö´Ê³ö×Ô<<¸ñÁзðÓμÇ>>,СÈ˹úµÄÄÚÕ½¾ÍÔ´ÓÚ³Ô¼¦µ°Ê±ÊǾ¿¾¹´Ó´óÍ·(Big-Endian)Çÿª»¹ÊÇ´ÓСͷ(Little-Endian)Çÿª.ÎÒÃÇÒ»°ã½«endian·­Òë³É"×Ö½ÚÐò",½«big endianºÍlittle endian³Æ×÷"´ó¶Ë"ºÍ"С¶Ë".
ÔÚ¼ÆËã»ú¿ÆÑ§ÁìÓòÖÐ,×Ö½ÚÐòÊÇÖ¸´æ·Å¶à×Ö½ÚÊý¾ÝµÄ×Ö½ÚµÄ˳Ðò,µäÐ͵ÄÇé¿öÊÇÕûÊýÔÚÄÚ´æÖеĴæ·Å·½Ê½ºÍ ......

C multi line macro: do/while(0) vs scope block

http://docs.google.com/View?docid=ajbgz6fp3pjh_2dwwwwt#_38239340844832237
It is not about optimization.
The whole idea of using 'do/while' version
is to make a macro which will
expand into a regular statement, not into a
compound statement. This is
done in order to make the use of function-s ......

c/c++ ºó׺ÃûÏê½â


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