#include <iostream>

using namespace std;

/*
 * For those of you who remember that previously we used
 * static_cast to cast a double to an int, here, the
 * compiler will not even let us do this:  we must state
 * that we want to *reinterpret* the pointer to a double
 * as a pointer to an integer.
 *
 * Most of you will never see reinterpret_cast again for
 * the rest of your happy lives.  Be happy. :-)
 */

int main() {
	double x = 3.141592653589793;

	// force it to store the address of x in a variable
	// declared to be a pointer to an integer

	int * int_ptr = reinterpret_cast<int *>( &x );

	cout << "The double 'x' has the value     " << x << endl;

	*int_ptr = 314159265;

	cout << "The double 'x' now has the value " << x << endl;

	return 0;
}