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CÎ»ÒÆµÄÎÊÌâÒÔ¼°ÆäËû - C/C++ / CÓïÑÔ

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ÎÒÔÚÍøÉÏ¿´µ½Ò»¸ö´úÂë ¿ÉÒÔÕýÈ·ÔËÐУ¬µ«ÊÇ¶ÔÆäÖеÄÒ»ÖÖÓ÷¨²»Àí½â
[code=C/C++][/code]
#include <iostream>
using namespace std;

char* Reverse(char *s)
{
if (strlen(s)==1)
{
return s;
}
if(*s)
{
s[0]=s[0]^s[strlen(s)-1];
s[strlen(s)-1]=s[0]^s[strlen(s)-1];
s[0]=s[0]^s[strlen(s)-1];

//unsigned short gg=(*(s+strlen(s)-1))<<8;
//cout<<gg<<endl;//24832=97*256
*(unsigned short *)(s+strlen(s)-1)=(*(s+strlen(s)-1))<<8; //unsigned short³¤¶ÈΪ2byte
//×óÒÆ²Ù×÷±¾Éí²¢²»¸Ä±ä(*(s+strlen(s)-1))µÄÖµ


Reverse(s+1);
*(unsigned short *)(s+strlen(s))=(*(s+strlen(s)+1));
return s;
}
else return s;

}

int main()
{
char a[]="abcdef";
cout<<Reverse(a);
return 0;
}

*(unsigned short *)(s+strlen(s)-1)=(*(s+strlen(s)-1))<<8; ÕâÒ»¾ä°Ù˼²»µÃÆä½â£¬¾ÙÀýÀ´ËµÒ»ÏÂ
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ÄܰïÖúÎҵĸø·Ö.(*(s+strlen(s)-1))ÊÇcharÐ굀 ×óÒÆ8λ²»ÊÇÈ«0ÁËÂð aÈ¥ÄÄÁËÄØ£¿ ¿´³ÌÐòÔËÐеĽá¹û ÖªµÀÕâ¸öÓï¾äÄܱä³É '\0''a'.

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µÚ¶þ¸öÎÊÌ⣺È磺int a =7£»char b='g' ÔõôÄܹ»cout³ö±äÁ¿aºÍ±äÁ¿bµÄÿ¸öλµÄ¾


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Ϊʲôxml²»ÄÜÏÔʾ°¢À­²®ÎÄ - C/C++ / C++ ÓïÑÔ

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