#include <stdio.h>

int *square(int *x)
{
	*x = (*x) * (*x);
	return x;
}

int main(int argc, char **argv)
{
	int a = 2007;
	int b = a;
	int *pb = &b;

	pb = square(pb);

	printf("%d squared is %d\n", a, *pb);

	return 0;
}