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#include <stdio.h>¡¡¡¡¡¡¡¡ //¶¨ÒåÊäÈ룯Êä³öº¯Êý
#include <stdlib.h>¡¡¡¡¡¡¡¡//¶¨ÒåÔÓÏÊý¼°ÄÚ´æ·ÖÅ亯Êý
#include <string.h>¡¡¡¡¡¡¡¡//×Ö·û´®´¦Àí
#include <assert.h>¡¡¡¡¡¡¡¡//É趨²åÈëµã
#include <ctype.h>¡¡¡¡¡¡¡¡ //×Ö·û´¦Àí
#include <errno.h>¡¡¡¡¡¡¡¡ //¶¨Òå´íÎóÂë
#include <float.h>¡¡¡¡¡¡¡¡ //¸¡µãÊý´¦Àí
#include <fstream.h>¡¡¡¡¡¡ //ÎļþÊäÈ룯Êä³ö
#include <iomanip.h>¡¡¡¡¡¡ //²ÎÊý»¯ÊäÈ룯Êä³ö
#include <iostream.h>¡¡¡¡¡¡//Êý¾ÝÁ÷ÊäÈ룯Êä³ö
#include <limits.h>¡¡¡¡¡¡¡¡//¶¨Òå¸÷ÖÖÊý¾ÝÀàÐÍ×îÖµ³£Á¿
#include <locale.h>¡¡¡¡¡¡¡¡//¶¨Òå±¾µØ»¯º¯Êý
#include <math.h>¡¡¡¡¡¡¡¡¡¡//¶¨ÒåÊýѧº¯Êý
#include <strstrea.h>¡¡¡¡¡¡//»ùÓÚÊý×éµÄÊäÈ룯Êä³ö
#include <time.h>¡¡¡¡¡¡¡¡¡¡//¶¨Ò幨ÓÚʱ¼äµÄº¯Êý
#include <wchar.h>¡¡¡¡¡¡¡¡ //¿í×Ö·û´¦Àí¼°ÊäÈ룯Êä³ö
#include <wctype.h>¡¡¡¡¡¡¡¡//¿í×Ö·û·ÖÀà
///////////////////////////////////////////////////////////
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#include <algorithm>¡¡¡¡¡¡ //STL ͨÓÃËã·¨
#include <bitset>¡¡¡¡¡¡¡¡¡¡//STL λ¼¯ÈÝÆ÷
#include <cctype>
#include <cerrno>
#include <clocale>
#include <cmath>
#include <complex>¡¡¡¡¡¡¡¡ //¸´ÊýÀà
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>¡¡¡¡¡¡¡¡¡¡ //STL Ë«¶Ë¶ÓÁÐÈÝÆ÷
#include <exception>¡¡¡¡¡¡ //Òì³£´¦ÀíÀà
#include <fstream>
#include <functional>¡¡¡¡¡¡//STL ¶¨ÒåÔËË㺯Êý£¨´úÌæÔËËã·û£©
#include <limits>
#include <list>¡¡¡¡¡¡¡¡¡¡¡¡//STL ÏßÐÔÁбíÈÝÆ÷
#include <map>¡¡¡¡¡¡¡¡¡¡¡¡ //STL Ó³ÉäÈÝÆ÷
#include <iomanip>
#include <ios>¡¡¡¡¡¡¡¡¡¡¡¡ //»ù±¾ÊäÈ룯Êä³öÖ§³Ö
#include <iosfwd>¡¡¡¡¡¡¡¡¡¡//ÊäÈ룯Êä³öϵͳʹÓõÄǰÖÃÉùÃ÷
#include <iostream>
#include <istream>¡¡¡¡¡¡¡¡ //»ù±¾ÊäÈëÁ÷
#include <ostream>¡¡¡¡¡¡¡¡ //»ù±¾Êä³öÁ÷
#include <queue>¡¡¡¡¡¡¡¡¡¡ //STL ¶ÓÁÐÈÝÆ÷
#include <set>¡¡¡¡¡¡¡¡¡¡¡¡ //STL ¼¯


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int func(x)
{
int countx = 0;
while(x)
{
countx
++;
x = x&(x-1);
}
return countx;
}
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int change(int x,int y)
{
int temp=x;
x=y;
y=temp;
}
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int change(int *p,int *q)
{
int temp=*p;
*p=*q;
*q=temp;
}
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int change(int &x,int &y)
{
int temp=x;
x=y;
y=temp;
}
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#include <iostream>
using namespace std;
void main()
{
 char *p,*q;
 p = "abcde";
 q = p + 3;
 *q = 't';
 cout<<p<<endl;
 cout<<q<<endl;
}
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 *q = 't';
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