#include <stdio.h>
#include <math.h>
int main(void)
{
  double x,y;
  x = 0.8+cos(3);
  y = sin(x);  // double sin(double x) PROTOTYYPPI
  printf("sin %lf on %lf\n",x,y);
  if ( y > 0.5 ) printf("Yli puoli\n");
  return 0;
}