Dynamic memory allocation

    #include "point.h"
    void main()
    {
        int* ptr_2_int = new int;
        int* ptr_2_array = new int[ 100 ];

        int size = 1000;
        Point* ptr_points = new Point[ size ];

        //...
        delete ptr_2_int;
        delete[] ptr_2_array;
        delete[] ptr_points;
    }

• new and delete are keywords
• Remember to use delete[ ] for arrays!
• When out of memory, new returns NULL.
• If ptr is NULL,

         delete ptr;

  is harmless.