Kristina_1.3.3

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

int main() {
  float EPS = 0;
  float EP = 1, ep = 1;
  float x = 0;
  printf("Enter EPS(0 < EPS < 1) = ");
    if(scanf("%f", &EPS) != 1)
    {
        printf("Error.\n");
        return 0;
    }
  printf("Enter x = ");
    if(scanf("%f", &x) != 1)
    {
        printf("Error.\n");
        return 0;
    }
  long double y = 1;
  float powx = x*x;
  int factorial = 2;
  int f = 2;
  if(EPS >= 1 || EPS <= 0)
  {
    printf("Error EPS.\n");
    return 0;
  }
  printf("cos(x) = %f;\n", cos(x));
  while(ep >= EPS)
  {
    EP = powx/(factorial)*(-1);
    ep = powx/factorial;
    y = y + EP;
    powx = powx*x*x;
    factorial = factorial*(f + 1)*(f + 2);
    f = f + 2;
  }
  printf("Teilor = %lf\n", y);



  return 0;
}