#include <stdio.h>
#include <math.h>

void main(void)
{
  float  xs, xs2;
  double xd, xd2;

  xs  = sqrt(2.0);
  xs2 = xs*xs;

  xd  = sqrt(2.0);
  xd2 = xd*xd;

  printf("\n");
  printf("xs  = %f, xd  = %f\n\n", xs, xd);
  printf("xs2 = %f, xd2 = %f\n\n", xs2, xd2);
  printf("xs2 = %24.20f, xd2 = %24.20f\n\n", xs2, xd2);
  printf("xs2 - 2 = %f, xd2 - 2 = %f\n\n", xs2-2.0, xd2-2.0);
  printf("xs2 - 2 = %g, xd2 - 2 = %g\n\n", xs2-2.0, xd2-2.0);
}