c 数组指针与指针数组实例比较

#include<iostream>
        using namespace std;
       int main()
  
        {
            
           double A[3][3]={{1,2,300},{4,500,6},{700,8,9}};
           double (*p)[3];
                p = A;
              for(int i=0;i<3;i++)
              {
              for(int j=0;j<3;j++)
                   {
                         printf("%3.0f    ",*(*(p+i)+j));;  
                   }
                         printf("\n");
              }
           double *q[3]={A[0],A[1],A[2]};
                    cout<<q[0]<<endl;
                    cout<<A[0]<<endl;
                for(int i=0;i<3;i++)
                  {
                   for(int j=0;j<3;j++)
                    {
                     cout<<*(*(q+i)+j)<<" ";
                    // cout<<q[i][j]<<"  ";
                    }
                     cout<<endl;
                   }
         return 0;
        }