lab 8.2

#include <iostream>
#include <math.h>
#include <iomanip>
using namespace std;
typedef double(*uf)(double, double, int &);
void tabl(double, double, double, double, uf);
double y(double, double, int &);
double s(double, double, int &);
int main()
{
	cout << setw(8) << "x" << setw(15) << "y(x)" << setw(10) << "k" << endl;
	tabl(0.1, 1, 0.1, 0.00001, y);
	cout << endl;
	cout << setw(8) << "x" << setw(15) << "s(x)" << setw(10) << "k" << endl;
	tabl(0.1, 1, 0.1, 0.00001, s);
	return 0;
}
void tabl(double a, double b, double h, double eps, uf fun)
{
		int k = 0;
		double sum;
		for (double x = a; x<b + h / 2; x += h)
		{
			sum = fun(x, eps, k);
			cout << setw(8) << x << setw(15) << sum << setw(10) << k << endl;
		}
}
double y(double x, double eps, int &k)
{
	return ((exp(x) + exp(-x)) / 2);
}
double s(double x, double eps, int &k)
{
	double a, c, sum;
	sum = a = c =1;
	k = 1;
	while (fabs(c)>eps)
	{
		c = x*x / (2 * k*(2 * k - 1));
		a *= c;
		sum += a;
		k++;
	}
	return sum;
}