#include <stdio.h>

double power(double x, int p)
{
	if (p == 0)
	{
		return 1;
	}
	else if (p < 0)
	{
		return 1.0 / power(x, -p);
	}
	else
	{
		return x * power(x, p - 1);
	}
}


int main()
{
	double number, s;
	int exponent;

	printf("enter a number and an exponent:\n");
	scanf("%lf %d", &number, &exponent);

	s = power(number, exponent);
	printf("the power of %.2lf to the %d is %lf\n", number, exponent, s);
}