// Program:  power.cpp, an example recursive program
// Authors:  Dr Keith Shomper
// Date:     10/30/2008

#include <iostream>
#include <math.h>

using namespace std;

int myPower(int, int);

int main() {
	int p, b, e;

	cout << "This program computes expontials of integer bases to non-negative integer powers\n";
	cout << "\tWhat is your base?  ";
	cin >> b; 

	cout << "\tWhat is your exponent?  ";
	cin >> e;

	// evidently the user doesn't understand the instructions, so exit
	if (e < 0) {
		cout << "Please read the instructions for allowable inputs\n";
		return -1;
	}

	//compute b to the e power using the standard pow() function
	p = (int) pow(b, e);

	cout << b << " raised to the " << e << " power is " << p << endl;

	//compute b to the e power using the standard pow() function
	p =       myPower(b, e);

	cout << b << " raised to the " << e << " power is " << p << endl;

	return 0;
}

int myPower(int b, int e) {
	if (e == 0) {
		return 1;
	} else {
		return b * myPower(b, e-1);
	}
}