C++指向数组的指针

#include <iostream>

using namespace std;

int main () {
   // an array with 5 elements.
   double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0};
   double *p;

   p = balance;

   // output each array element's value 
   cout << Array values using pointer  << endl;

   for ( int i = 0; i < 5; i++ ) {
      cout << *(p +  << i << ) : ;
      cout << *(p + i) << endl;
   }
   cout << Array values using balance as address  << endl;

   for ( int i = 0; i < 5; i++ ) {
      cout << *(balance +  << i << ) : ;
      cout << *(balance + i) << endl;
   }

   return 0;
}