#include  
#include
#include
#include
#include

#define N 5

using namespace std;

const float M_2PIf = 6.283185307179586476925286766559f;
const float M_PIf  = 3.141592653589793238462643383279f;

/* —————–RANDOM_GENERATOR——————————- */

float rand(float min, float max)
{
    return min + (max – min) * rand() / (float)RAND_MAX;
}
/*——————————————————————*/

struct vektor {
float x,y,z;
};

/* ——————MATRIX_CLASS———————————–*/
class Matrix {

private:

float tomb[3][3];

public:
 
  void init(vektor &a){

    tomb[0][0] = a.x * a.x;
    tomb[0][1] = a.x * a.y;
    tomb[0][2] = a.x * a.z;
    tomb[1][0] = a.y * a.x;
    tomb[1][1] = a.y * a.y;
    tomb[1][2] = a.y * a.z;
    tomb[2][0] = a.z * a.x;
    tomb[2][1] = a.z * a.y;
    tomb[2][2] = a.z * a.z;
  }

Matrix &operator +=(Matrix b){
int k,l;
for(k=0; k<3; k++)
for(l=0; l<3; l++)
  tomb[k][l] += b.tomb[k][l];
return *this;
}

Matrix &operator/=(float c){
int k,l;
for(k=0; k<3; k++)
for(l=0; l<3; l++)
  tomb[k][l] /= c;
return *this;
}

};

/* ——————————————————————– */

int main() {

    int i,j;

    vektor tar[5];

    for (i = 0;i<5;i++) {

    float phi  = rand(0.0f, M_2PIf);
    float costheta = rand(-1.0f, 1.0f);
   
    float x = 1.0f * sqrtf(1-costheta*costheta) * cosf(phi);
    float y = 1.0f * sqrtf(1-costheta*costheta) * sinf(phi);
    float z = 1.0f * costheta;

    tar[i].x = x;
    tar[i].y = y;
    tar[i].z = z;

    }

    Matrix m[5];
    for (i=0;i<5;i++) {
 
    m[i].init(tar[i]);
    }

    Matrix sum = m[0];

    for (i=0;i<5;i++) {
 
    sum += m[i];
    }
   
    sum /= N;

   

return 0;
}

std::cout << sum << std::endl;

std::cout << valami_tömb[i][j] << std::endl;