#include <stdio.h>
int
main (void)
{
double x, y, z;
printf ("Enter two real numbers: ");
scanf ("%lf %lf", &x, &y);
z = x + y;
printf ("\nThe sum of %lf and %lf is %lf.\n", x, y, z);
printf ("\nThe product of %lf and %lf is %lf.\n", x, y, x*y);
return (0);
}