Name ch_lab1_w cpp Author Warlock include iostream include cmath using

//============================================================================
// Name        : ch_lab1_w.cpp
// Author      : Warlock
//============================================================================

#include <iostream>
#include <cmath>
using namespace std;

int fact(int a);

int main() {
	double sum = 0;
	int i = 1, N = 0;
	double e = 0.001;
	double dx = 0.05;
	double x,a,ft;

        cout << "+-----------+--------------+--------------+-----------------------+-------+"<<endl;
	cout << "|     x     |     f(x)     |    ft(x)     | (f(x)-ft(x))/f(x)*100 |   N   |"<<endl;
	cout << "+-----------+--------------+--------------+-----------------------+-------+"<<endl;

	for(x = 0; x < 1; x += dx)
	{
		ft = cos(x) - 1;
		a = pow((-1),i)*((pow(x,2*i))/(fact(2*i)));
		sum = a;

		for(i = 2; abs(a) < e; i++, N++)
		{
			a = pow((-1),i)*((pow(x,2*i))/(fact(2*i)));
			sum += a;
		}

		printf("|   %.2lf    |   %.5lf   |   %.5lf   |        %.5lf        |   %d   | \n",x,sum,ft,(sum-ft)/sum*100,N);
	//	cout << "|   " << x <<"   "<< sum <<"   "<< ft <<"   " << (sum-ft)/sum*100 << "   " << N <<"  |"<<endl;
	}
	cout << "+-----------+--------------+--------------+-----------------------+-------+"<<endl;
	cin.get();
	return 0;
}

int fact(int a)
{
	if(a > 0)
	{
		return a*fact(a-1);
	}
	return 1;
}