#include <iostream.h>

void square(void);
void three(void);
void (*pt)(void);


int main()
{
	square();
	pt=square;
	pt();

	pt=three;
	pt();

	return 0;

}

void square(void)
{
cout<<"Square"<<"\n";
}

void three(void)
{
cout<<"three"<<"\n";
}