/* Extended version of power function that can work
for float x and negative y*/
#include<stdio.h>

float power(float x, int y)
{
	float temp;
	if( y == 0)
	return 1;
	temp = power(x, y/2);	 
	if (y%2 == 0)
		return temp*temp;
	else
	{
		if(y > 0)
			return x*temp*temp;
		else
			return (temp*temp)/x;
	}
} 

/* Program to test function power */
int main()
{
	float x = 2;
	int y = -3;
	printf("%f", power(x, y));
	return 0;
}