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

#define e 2.73
#define E pow(10, -6)

double F(double x);
double S(double x);
double ch(double x);

int main(void)
{
  printf(" x \t|\t  S(x) \t\t|\t F(x)\n");

  for(double x = 0.5; x < 5.5; x += 0.5)
  {
    double s = S(x);
    double f = F(x);
    printf("%.1lf\t|\t%.6lf\t|\t%.5lf \n", x, s, f);
  }

  system("pause");
  return 0;
}

double F(double x)
{
  double x_k = x; double sum = x_k; int k = 2;

  while(fabs(x_k) > E)
  {
    x_k *= (pow(-1, k) * (x*x) / (k * (2*k+1)));
    sum += x_k; k++;
  }

  return sum;
}

double ch(double x)
{
  return (pow(e, x) + pow(e, -x)) / 2;
}

double S(double x)
{
  return F(x) - sin(x) * ch(x);
}