6. Pointer is a also variable

• 
      int main( )
      {
          int x = 1;  // x is an integer
          int y = 2;  // y is another integer
          int* ptr;   // ptr is a pointer to integer
          ptr = &x;   // store the address of x in ptr
          ptr = &y;   // store the address of y in ptr
          return 0;
      }