#include <iostream>

struct Circle{
    float radius;
    float CenterX;
    float CenterY;
};

struct Vec
{
    float x;
    float y;
};

struct Matrix{
    float a[3][3];
};

void intpart(float*);
void intpart(float&);

void change(float*);
void change(float&);

void move(Circle*,Vec*);
void move(Circle&,Vec&);

void multiply(Matrix*,float*);
void multiply(Matrix&,float&);

void intpart(float *a)
{
    *a = int(*a);
}
void intpart(float &a)
{
    a=int(a);
}

void change(float *a) {
    *a = -1 * (*a);
}

void change(float &a)
{
    a=-1*a;
}

void move(Circle *a,Vec *b)
{
    a->CenterX= a->CenterX + b->x;
    a->CenterY = a->CenterY+ b->y;
}

void move(Circle &a,Vec &b)
{
    a.CenterX+=b.x;
    a.CenterY+=b.y;
}

void multiply(Matrix *a,float *b)
{
    for(int i=0;i<3;i++)
        for(int j=0;j<3;j++)
            a->a[i][j] *= *b;
}

void multiply(Matrix &a,float &b)
{
    for(int i=0;i<3;i++)
        for(int j=0;j<3;j++)
            a.a[i][j] *= b;
}
int main() {
    float num = 3.65;
    float &numRef = num;
    intpart(&num);
    intpart(numRef);
    std::cout << num << " " << numRef << std::endl;

    float num1 = -3.789;
    float num2 = 4.5;
    float &num2Ref = num2;
    change(&num1);
    change(num2Ref);
    std::cout << num1 << " " << num2 << std::endl;

    Circle k;
    k.radius = 4;
    k.CenterX = 5;
    k.CenterY = 6;
    Vec a;
    a.x = 2;
    a.y = 2;
    Circle &kRef = k;
    Vec &aRef = a;
    move(&k, &a);
    move(kRef,aRef);
    std::cout << k.CenterX << " " << k.CenterY << std::endl;
    std::cout << kRef.CenterX << " " << kRef.CenterY << std::endl;

    Matrix p, l;
    int v = 0;
    for (int i = 0; i < 3; i++)
        for (int j = 0; j < 3; j++) {
            p.a[i][j] = v;
            l.a[i][j] = v;
            v++;
        }
    float b = -3;
    multiply(&p, &b);
    for (int i = 0; i < 3; i++){
        for (int j = 0; j < 3; j++) {
            std::cout << p.a[i][j] << " ";
        }
        std::cout<<std::endl;
}
    Matrix& lRef = l;
    float& bRef = b;
    multiply(lRef,bRef);
    for (int i = 0; i < 3; i++){
        for (int j = 0; j < 3; j++) {
            std::cout << l.a[i][j] << " ";
        }
        std::cout<<std::endl;
    }
    return 0;
}