/*------------------------------------------------
 signature: main: void -> int
 purpose: to play with pointers, now also 
     featuring dynamic memory allocation!

 examples: when you run this program,
     the following should be printed to the
     screen:
*num_ptr: 25.8
*val_ptr: 25.8

*num_ptr: 50
*val_ptr: 50

by: Sharon Tuttle
last modified: 12-3-10
------------------------------------------------*/

#include <iostream>
using namespace std;

int main()
{
    double *num_ptr;
    double *val_ptr;

    num_ptr = new double;
    *num_ptr = 25.8;
    val_ptr = num_ptr;

    cout << "*num_ptr: " << *num_ptr << endl;
    cout << "*val_ptr: " << *val_ptr << endl;
    cout << endl;

    *val_ptr = 50.0;  

    cout << "*num_ptr: " << *num_ptr << endl;
    cout << "*val_ptr: " << *val_ptr << endl;

    delete num_ptr;
    num_ptr = NULL;
    val_ptr = NULL;

    return EXIT_SUCCESS;
}