/* Example 24.2
	Recursive calculation of Power
	Author: Peter Brusilovsky
	The program requests two integers a and b and calculates a power b
	If b is negative, the program does nothing
	*/
	#include <stdio.h>
	int power(int, int);
	void main(){
	int a, b;
	printf("Enter a and b: ");
	scanf("%d %d", &a, &b);
	if(b >= 0)
	printf("%d power %d = %d ", a, b, power(a, b));
	}
	int power(int base, int exp) {
	if(exp == 0)
	return 1;
	else
	return (base * power(base, exp - 1));
	}
	}