#include <math.h>
#include <conio.h>
#include <complex>
#include <iostream>

#define PI 3.1415926535897932385

using namespace std;

class Z
{	
	int		Q;
	float	teta;
	int		k, l;
	int		a_teta[9];
	

	void Init(void) 
	{	
		 
		k = 1;
		a_teta[0] = PI/2;
		a_teta[1] = PI/3;
		a_teta[2] = PI/4;
		a_teta[3] = 1.884;
		a_teta[4] = PI/2;
		a_teta[5] = 1.345;
		a_teta[6] = 1.1775;
		a_teta[7] = 1.744;
		a_teta[8] = PI/2; 
		teta=a_teta[l-2];
		
	};
	
	// âñïîìîãàòåëüíûå ôóíêöèè
	
	float Gkl()
	{	
		return sin((l-k) * teta) / (l*l - k*k);
	
	};
	
public:
	void SetQ( int inQ ) { Q = inQ; };
	void SetL( int inL ) { l = inL; };
	

	void Z11( complex<float> &z)
	{	
		z = std::complex<float>(1.0, -Q/(k*PI)*(teta+(sin(2*k*teta))/(2*k)) );
	};

	void Z12( complex<float> &z)
	{
		z = std::complex<float>(0, -(Q/PI)*2*Gkl() );
	};

	void Z21( complex<float> &z)
	{
		z = std::complex<float>( 0, (-Q/PI)*2*Gkl() );
	};

	void Z22( complex<float> &z)
	{
		z = std::complex<float>( 1, -Q/(l*PI)*(teta-(sin(2*l*teta))/(2*l)) );
	};
	void Zkopt( complex<float> &z, complex<float> &z11, complex<float> &z12, complex<float> &z21)
	{
		z = std::complex<float>(sqrt(1+z12.imag()*z21.imag()), -z11.imag());
	};
};

//---------------------------------------------------------------

int main(int argc, char* argv[])
{
	// íàø êëàññ
	Z z;

	// ýëåìåíòû ìàòðèöû
	complex<float> z11;
	complex<float> z12;
	complex<float> z21;
	complex<float> z22;
	complex<float> zkopt;

	// çàäàíèå ïàðàìåòðîâ

	z.SetQ( 100 );
	int inL;
	while ((inL<2) || (inL>10)) {
	std::cout << "vvodim 2<l<10" << std:: endl;
	std::cin >>inL;
	z.SetL(inL);}

	// âîçâðàò çíà÷åíèé
	z.Z11( z11 );
	z.Z12( z12 );
	z.Z21( z21 );
	z.Z22( z22 );
	z.Zkopt( zkopt,z11,z12,z21);

	// ðàñïå÷àòêà

	std::cout << z11 << std::endl;
	std::cout << z12 << std::endl;
	std::cout << z21 << std::endl;
	std::cout << z22 << std::endl;
	std::cout << zkopt << std::endl;
	// çàäåðæêà íà ýêðàíå
	int c = getch();
	return 0;
}
//---------------------------------------------------------------------------