// Chapter 3 - Program 2
#include <iostream.h>

struct date {
int month;
int day;
int year;
};

main()
{
int index, *point1, *point2;

point1 = &index;//assigns the address of index to point1.
*point1 = 77;//assigns the value of 77 to index.
point2 = new int;//allocate a new int pointer
*point2 = 173;//assigns a value to the new pointer
cout << "The values are " << index << "  " <<
*point1 << "  " << *point2 << "\n";
point1 = new int;//allocating a new pointer, and wiping out old point1
point2 = point1;//assigns a new valu to point2, wasting the allocated space on
//old point2.
*point1 = 999;
cout << "The values are " << index << "  " <<
*point1 << "  " << *point2 << "\n";
//delete can *only* delete allocation if assigned with "new".
delete point1;// point1 deallocated, freeing up that heap space, but point2 is
//still pointing to that space!  not good procedure.


float *float_point1, *float_point2 = new float;

float_point1 = new float;
*float_point2 = 3.14159;
*float_point1 = 2.4 * (*float_point2);
delete float_point2;
delete float_point1;
//a structure pointer:
date *date_point;

date_point = new date;
date_point->month = 10;
date_point->day = 18;
date_point->year = 1938;
cout << date_point->month << "/" << date_point->day << "/" <<
date_point->year << "\n";
delete date_point;

char *c_point;

c_point = new char[37];
delete c_point;
c_point = new char[sizeof(date) + 133];
delete c_point;
}




// Result of execution
//
// The values are 77  77  173
// The values are 77  999  999
// 10/18/1938