C语言二维数组几种常用的表示方法

#include<iostream>
using namespace std;
int main()
{
  int a[3][3] = {{0,1,2},{3,4,5},{6,7,8}};
  int b[9] = {0,1,2,3,4,5,6,7,8};
  int *c[3];
  int **p;
  cout<<"普通二维数组表示"<<endl;
  for(int i = 0;i<3;++i)
  {
    for(int j = 0;j<3;++j)
     {
      cout<<a[i][j]<<"("<<&a[i][j]<<")"<<" ";  //括号里是对应元素的地址
      //cout<<*(*(a+i)+j)<<" ";
    }
    cout<<endl;
  }
  cout<<"普通一维数组表示"<<endl;
  for(int i = 0;i<3;++i)
  {
    for(int j = 0;j<3;++j)
    {
      cout<<b[i*3+j]<<"("<<&b[i*3+j]<<")"<<" ";
    }
    cout<<endl;
  }
  cout<<"指针数组表示:"<<endl;
  for(int i = 0;i<3;++i)
  {
    c[i] = *(a+i);   //c[i]指向a数组的第i行首地址
    for(int j = 0;j<3;++j)
    {
      cout<<c[i][j]<<"("<<&c[i][j]<<")"<<" ";
    }
    cout<<endl;
  }
  cout<<"指针变量表示"<<endl;
  p = c;   //p为指向指针的指针，将指针数组c赋给指针变量p
  for(int i = 0;i<3;++i)
  {
    for(int j = 0;j<3;++j)
    {
      cout<<p[i][j]<<"("<<&p[i][j]<<")"<<" ";
    }
    cout<<endl;
  }
 return 0;
}