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void swap(int *a,int *b){
    int *tmp;
    *tmp=*a;
    *a=*b;
    *b=*tmp;
}
±¾À´ÊÇÏëÀûÓÃÉÏÃæµÄswapº¯ÊýʵÏÖÁ½¸öÊýµÄ»¥»»£¬µ«ÊÇ*tep=*a;Õâ¾ä»°ÊÇÓÐÎóµÄ£¬ÒòΪָÕëtmpûÓб»¸³Öµ£¡ÊÇÓÃgcc±àÒëʱ²»»á³ö´í£¬µ«ÊÇÔËÐÐʱ»á³öÏÖ¶Ï´íÎó£¡
2.Êý×éÓëÖ¸Õë
    ÕâÀïÓÐÁ½¸öºÜÈÝÒ×»ìÏýµÄ¸ÅÄÊý×éÖ¸ÕëºÍÖ¸ÕëÊý×é
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int data[4];
int *p=data;»òint *p;p=data;
---------------------------------------------------
int data[2][3];
int *p=data;
int i=0;
while(i<2*3){
    scanf("%d",&p[i++]);
}
i=0;
while(i<2*3){
    printf("%d\t",p[i++]);
}
printf("\n");
ÊÇÓÃgcc±àÒëʱ»á²úÉú¾¯¸æ£º´Ó²»¼æÈݵÄÖ¸ÕëÀàÐͳõʼ»¯
    Êý×éÖ¸Õ룬ÕâÀï˵µÄÊý×éÖ¸Õë¼´Ö¸ÏòÊý×éµÄÖ¸Õ룬ÕâÓÐʲôºÍÉÏÃæµÄ²»Í¬ÄØ£¿ÊÇÓÃÏÂÃæÕâÖÖÊý×éÖ¸Õë¾ÍÊÇgccÏëÒªµÄ£¬ËùÒÔ²»»áÔÙ²úÉú¾¯¸æÁË¡£
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int data[2][3]={1,2,3,4,5,6};
int (*pd)[3]=data;»òint (*pd)[3];pd=data;
int i=0,j=0;
while(i<2){
    while(j<3){
        printf("%d\t",*(*(pd+i)+j++));
    }
    i++;
    j=0;
    printf("\n");
}
//(*pd)[3]±íʾָÕëpdÖ¸ÏòµÄÊÇһάÊý×飬Õâ¸öÊý×éÊÇintµÄ£¬¶øÇÒº¬ÓÐÈý¸öÔªËØ¡£»¹ÓжþάÊý×鱨ÐëÃ÷È·Ö¸¶¨ÁеĴóС£¬ÕâµãºÜÈÝÒ×Àí½â£¬ÀýÈçÉÏÃæ¿ÉÒÔд³É
int data[][3]={1,2,3,4,5,6};
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int data[2][]={1,2,3,4,5,6};
ÒòΪºóÃæÕâÖÖд·¨£¬±àÒëÆ÷¸ù±¾¾Í²»ÖªµÀÓ¦¸ÃÔõÑù¸³Öµ£¡ËäȻָÃ÷ÁËÕâ¸öÊý×éÓÐÁ½ÐУ¬µ«ÊÇÒ»ÐÐÓжàÉÙ¸öÊýÄØ£¿²¢²»ÖªµÀ£¬»òÐíÊÇdata[0][]={1,2,3,4},data[1][]={5,6}»¹ÊÇdata[0][]={1,2,3,4,5,6],data[1][]={}ÄØ£¿ËùÒԾͺܺÃÀí½âÓ¦¸ÃÖ¸¶¨ÁÐÊýÁË¡£
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char strings[][10]={"beijing","shanghai","tianjin","chongqi


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//±³°üÎÊÌâ
#include "stdio.h"
#define MAX 10
void main()
{
 int w[MAX]={0,10,130,15,60,25};      //´æ·ÅÖÊÁ¿
 int v[MAX]={0,30,5,10,20,25};   //´æ·Å¼ÛÖµ
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