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int main()
{
int b=2,c=3,d=4;
int *p1,*p2,*p3;
p1=&b;
p2=&c;
p3=&d;
int i;
int *num[]={p1,p2,p3};//numÊÇÒ»¸öÖ¸ÕëÊý×飬ÿһ¸öÔªËØÊÇÖ¸ÏòÕûÐÎÊý¾ÝµÄÖ¸ÕëÀàÐÍ£¬»òÕß˵ÿһ¸öÔªËØ¶¼ÊÇÖ¸ÕëÐÍÊý¾Ý£¬
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int **pt;   //¶¨ÒåÕâôһ¸ö±äÁ¿£¬´æ·ÅµÄÊÇÖ¸ÕëÊý×éµÄÔªËØ£¬Õâ¸ö±äÁ¿ÎªÖ¸ÏòÖ¸ÕëµÄÖ¸Õë±äÁ¿£¬¿ÉÒÔÖ¸ÏòֵΪµØÖ·µÄ²»Í¬µÄ±äÁ¿£¨Ö¸Õë±äÁ¿£©

pt=num;
for(i=0;i<3;i++)
{
cout<<pt<<" "<<*pt<<" "<<**pt<<endl;//×¢ÒâÁË£¬pt´ú±íµÄÊÇËüËùÖ¸ÏòµÄ±äÁ¿µÄµØÖ·£¬Ò²¾ÍÊÇ¿ª±ÙµÄÈý¸öÖ¸Õë±äÁ¿p1,p2,p3µÄÔÚÄÚ´æµ±Öеĵؠ                     //Ö·£¨ÖÁÓÚ´ú±íÄĸö¾ÍÒª¿´µ±Ç°µÄÖ¸ÏòÁË£©
pt++;                  //¶ø*pt´ú±íµÄÊÇpt´æ´¢µÄ±äÁ¿µÄÖµ£¬¼ÙÈçptµ±Ç°Ö¸ÏòµÄ±äÁ¿Îªp1,ÄÇô*pt¾ÍÊDZäÁ¿p1µÄÖµ£¬¶øÊÂÏÈ
                       //ÒѾ­½«bµÄµØÖ·¸øÁËp1Õâ¸ö±äÁ¿£¨´æ·ÅµØÖ·µÄ±äÁ¿£©,Òò´Ë*ptÆäʵ¾ÍÊÇbÕâ¸ö±äÁ¿µÄµØÖ·£¨*ptµÈͬÓÚ&b)
                       //¶Ô*ptÔÚ×öÒ»´ÎÖ¸ÕëÔËËã*£¬Ò²¾ÍÊÇ**pt,ÄÇô¾ÍʹµÃ*ptÕâ¸öÖ¸ÕëÖ¸ÏòÁËbËù¶ÔÓ¦µÄ´æ´¢µ¥ÔªµÄÄÚÈÝÒ²¾ÍÊÇ2.
}

return 0;
}

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