#include <stdlib.h>
#include <iomanip.h>
#include <fstream.h>
#include <math.h>
#define  begin {
#define  end  }

typedef double (*FPtr) (double);


  double f1(double x)
  {
  if (x==0)
	  return (0);
  else
	  return (x + 1/x);
	 }

  double f2(double x)
  {
  if (x==0)
	  return (0);
  else
	  return (1 - 1/(x*x));
	 }

  int main()
  {
  int s;
  double a=.1;
  double b=4;
  int i;
  double x,y1,y2,h;
  ofstream OUTP1;
  ofstream OUTP2;
  OUTP1.open("out1.txt",ios::out);
  if (OUTP1.fail())
  {
	  cout<<"out1.txt file could not be opened - program terminated.";
	  abort();
	}
  OUTP1.setf(ios::fixed);
  OUTP1<<setprecision(8);
  OUTP2.open("out2.txt",ios::out);
	 if (OUTP2.fail())
  {
	  cout<<"out2.txt file could not be opened - program terminated.";
			 exit(-1);
				}
  OUTP2.setf(ios::fixed);
  OUTP2<<setprecision(8);
  h=(b-a)/200;
  for (i=0; i<200;i++)
  {
	 x=a+i*h;
	 y1=f1(x);
	 y2=f2(x);
	 OUTP1<<x<<"\t"<<y1<<endl;
	 OUTP2<<x<<"\t"<<y2<<endl;
	 }
  OUTP1.close();
  OUTP2.close();
  return(0);
  }