/*
 * Program to compute hypotenuse of a right triangle (sqrt(a*a + b*b)).
 *
 * Input:  floating-point numbers a, b.
 *
 * Output:  sqrt(a*a + b*b)
 */
#include <stdio.h>
#include <math.h>

/* Computes hypotenuse of right triangle with sides a and b, and returns it */
double hypotenuse(double a, double b) {
	/* as written in class
	   double result;
	   result = sqrt(a*a + b*b);
	   return result;
	 */
	/* simpler way */
	return sqrt(a*a + b*b);
}

/* Main program */
int main(void) {

	double input1;
	double input2;
	double answer;

	printf("enter two sides of a right triangle:\n");

	scanf("%lf", &input1); /* %lf means convert to type double */
	scanf("%lf", &input2);

	answer = hypotenuse(input1, input2);
	printf("hypotenuse for sides %f and %f is %f\n", 
			input1, input2, answer);

	answer = hypotenuse(2*input1, 2*input2);
	printf("hypotenuse for sides %f and %f is %f\n", 
			2*input1, 2*input2, answer);

	return 0;
}