/* Exercise 5.15 Solution */
#include <stdio.h>
#include <math.h>

double 
hypotenuse (double s1, double s2);

void
main ()
{
  double side1, side2;
   
  printf ("Enter the sides of the triangle: ");
  scanf ("%lf%lf", &side1, &side2);
  printf ("Hypotenuse:  %.1f\n\n", hypotenuse (side1, side2));
}

double 
hypotenuse (double s1, double s2)
{
  return sqrt ((s1 * s1) + (s2 * s2));
}