（2）源程序及运行结果。

#include <iostream>

using namespace std;

int check(int x,int used[10])

{

       do {

              if(used[x%10] > 0)

                     return 0;

              else

                     used[x % 10]++;

       }while(x /= 10);

       return 1;

}

int checkpower(int x[],int used[10])

{

       do {

              if(used[x[0]%10] > 0) {

                     return 0;

              }

       } while(x[0]/=10);

    for (int i=1;i<=8;i++)

    {

              if(used[x[1]%10] > 0)

                     return 0;

              x[1]=x[1]/10;

       }

       return 1;

}

int main()

{

       int i,a,b,c,x[2];

    int k,used[10];

       for(i=123456; i<=987654; i++)

       {

              for (k=0;k<=9;k++)

                     used[k]=0;

              if(!check(i,used))

                     continue;

        a=i/10000;  b=i%10000;

              x[0]=a*a;   x[1]=b*b;

              c=2*a*b;

              x[1]=x[1]+c%10000*10000;

              x[0]=x[0]+c/10000;

              x[0]=x[0]+x[1]/100000000;