指针与数组的关系，指针运算，指向指针的指针（二维指针）

#include<iostream>
using namespace std;


int main()
{
  int a[5] = {0,1,2,3,4};
  int *p = a;

  

  cout << a[1] << endl << p[1]<<endl;
  cout << p + 1<<endl << &a[1] << endl;
  cout << p << endl << a << endl;

  int i = 10;
  int *p1 = &i;
  int **p2 = &p1;
  printf("%d,%d\n", **p2);
  printf("%d\n", &p1);

  system("pause");
  return 0;
}