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/*
* Для расчет площади фигур квадрат/ромб/прямоугольник/параллелограмм
* справедлива будет одна общая формула - произведение основания на высоту
*/
#ifndef EXERCISE_1_HPP_
#define EXERCISE_1_HPP_
#include <math.h>
#define PI 3.14159265358979323846
float getRadian(float degree)
{
return PI / 180 * degree;
}
class Figure
{
public:
virtual float area() = 0;
virtual ~Figure() { };
};
class Parallelogram : public Figure
{
private:
float m_side_a;
float m_side_b;
float m_height;
protected:
float getSideA() const
{
return m_side_a;
}
float getSideB() const
{
return m_side_b;
}
public:
Parallelogram(float side_a, float height, float side_b = 0.0)
: m_side_a(side_a), m_side_b(side_b), m_height(height) { }
float area()
{
float area = m_side_a * m_height;
std::cout << "Площадь параллелограмма равна " << area << std::endl;
return area;
}
};
class Circle : public Figure
{
private:
float m_radius;
public:
Circle(float radius) : m_radius(radius) { }
float area()
{
float area = PI * pow(m_radius, 2);
std::cout << "Площадь круга равна " << area << std::endl;
return area;
}
};
class Rectangle : public Parallelogram
{
public:
Rectangle(float side_a, float side_b)
: Parallelogram(side_a, side_b, side_b) { }
float area()
{
float area = getSideA() * getSideB();
std::cout << "Площадь прямоугольника равна " << area << std::endl;
return area;
}
};
class Square : public Parallelogram
{
public:
Square(float side_a)
: Parallelogram(side_a, side_a, side_a) { }
float area()
{
float area = getSideA() * getSideB();
std::cout << "Площадь квадрата равна " << area << std::endl;
return area;
}
};
class Rhombus : public Parallelogram
{
public:
Rhombus(float side_a, float side_b)
: Parallelogram(side_a, side_b, side_b) { }
float area()
{
float area = getSideA() * getSideB();
std::cout << "Площадь ромба равна " << area << std::endl;
return area;
}
};
#endif

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#ifndef EXERCISE_2_HPP_
#define EXERCISE_2_HPP_
#include <iostream>
class Car
{
private:
std::string m_company;
std::string m_model;
protected:
std::string getCompany() const
{
return m_company;
}
std::string getModel() const
{
return m_model;
}
public:
Car(std::string company, std::string model) : m_company(company), m_model(model)
{
std::cout << "Транспортное средство компании " + getCompany() + ", модель " + getModel() << std::endl;
}
};
class PassengerCar : virtual public Car
{
public:
PassengerCar(std::string company, std::string model) : Car(company, model)
{
std::cout << "Легковой автомобиль компании " + getCompany() + ", модель " + getModel() << std::endl;
}
};
class Bus : virtual public Car
{
public:
Bus(std::string company, std::string model) : Car(company, model)
{
std::cout << "Автобус компании " + getCompany() + ", модель " + getModel() << std::endl;
}
};
class Minivan : public PassengerCar, public Bus
{
public:
Minivan(std::string company, std::string model) :
Car(company, model), PassengerCar(company, model), Bus(company, model)
{
std::cout << "Минивэн компании " + getCompany() + ", модель " + getModel() << std::endl;
}
};
#endif

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#ifndef EXERCISE_3_HPP_
#define EXERCISE_3_HPP_
#include <iostream>
class Fraction
{
private:
bool is_zero;
bool is_integer;
int numerator;
int denominator;
/*
* Поиск наибольшего общего делителя
* для числителя и знаменателя
*/
int NOD(int n1, int n2)
{
int div;
if (n1 == n2) return n1;
int d = n1 - n2;
if (d < 0)
{
d = -d;
div = NOD(n1, d);
}
else
div = NOD(n2, d);
return div;
}
/*
* Поиск наименьшего общего кратного
* для знаменателей
*/
int NOK(int n1, int n2)
{
return n1 * n2 / NOD(n1, n2);
}
/*
* Функция сокращения дроби
*/
void reduceFraction(int& a, int& b)
{
int divisor = NOD(abs(a), abs(b));
a = a / divisor;
b = b / divisor;
}
public:
Fraction () : numerator(0), denominator(0)
{
is_zero = true;
is_integer = true;
}
Fraction(int num, int dnum) : numerator(num), denominator(dnum)
{
if (numerator == 0 || denominator == 0)
{
std::cout << "Числитель или знаменатель не может быть нулевым!\n"
<< "Число будет инициализировано нулём!" << std::endl;
numerator = 0;
denominator = 0;
is_zero = true;
is_integer = true;
}
else
{
is_zero = false;
is_integer = (abs(numerator) == abs(denominator) || denominator == 1);
}
}
friend std::ostream& operator<<(std::ostream&, const Fraction&);
Fraction operator+(const Fraction&);
Fraction operator-(const Fraction&);
Fraction operator*(const Fraction&);
Fraction operator/(const Fraction&);
Fraction operator-() const;
bool operator==(const Fraction&);
bool operator!=(const Fraction&);
bool operator<(const Fraction&);
bool operator>=(const Fraction&);
bool operator>(const Fraction&);
bool operator<=(const Fraction&);
};
std::ostream& operator<<(std::ostream& s, const Fraction& f)
{
if (f.is_integer)
{
if (f.is_zero)
s << f.numerator;
else
s << f.numerator / f.denominator;
}
else
s << f.numerator << '/' << f.denominator;
return s;
}
Fraction Fraction::operator+(const Fraction& f)
{
if (f.is_zero)
return Fraction(numerator, denominator);
if (is_zero)
return Fraction(f.numerator, f.denominator);
int new_denominator = NOK(denominator, f.denominator);
int new_numerator = numerator * (new_denominator / denominator) + f.numerator * (new_denominator / f.denominator);
reduceFraction(new_numerator, new_denominator);
return Fraction(new_numerator, new_denominator);
}
Fraction Fraction::operator-(const Fraction& f)
{
if (f.is_zero)
return Fraction(numerator, denominator);
if (is_zero)
return Fraction(-f.numerator, f.denominator);
int new_denominator = NOK(denominator, f.denominator);
int new_numerator = numerator * (new_denominator / denominator) - f.numerator * (new_denominator / f.denominator);
if (new_numerator == 0)
return Fraction();
reduceFraction(new_numerator, new_denominator);
return Fraction(new_numerator, new_denominator);
}
Fraction Fraction::operator*(const Fraction& f)
{
if (is_zero || f.is_zero)
return Fraction();
int new_numerator = numerator * f.numerator;
int new_denominator = denominator * f.denominator;
reduceFraction(new_numerator, new_denominator);
return Fraction(new_numerator, new_denominator);
}
Fraction Fraction::operator/(const Fraction& f)
{
if (f.is_zero)
{
std::cout << " [На 0 делить нельзя!] ";
return Fraction();
}
if (is_zero)
return Fraction();
return *this * Fraction(f.denominator, f.numerator);
}
Fraction Fraction::operator-() const
{
return Fraction(-numerator, denominator);
}
bool Fraction::operator==(const Fraction& f)
{
if (is_zero || f.is_zero)
return numerator == f.numerator;
int a_n = numerator;
int a_d = denominator;
int b_n = f.numerator;
int b_d = f.denominator;
reduceFraction(a_n, a_d);
reduceFraction(b_n, b_d);
return a_n == b_n && a_d == b_d;
}
bool Fraction::operator!=(const Fraction& f)
{
return !(*this == f);
}
bool Fraction::operator<(const Fraction& f)
{
if (is_zero || f.is_zero)
return numerator < f.numerator;
int new_denominator = NOK(denominator, f.denominator);
int a_n = numerator * (new_denominator / denominator);
int b_n = f.numerator * (new_denominator / f.denominator);
return a_n < b_n;
}
bool Fraction::operator>=(const Fraction& f)
{
return (*this == f || !(*this < f));
}
bool Fraction::operator>(const Fraction& f)
{
return (*this != f && !(*this < f));
}
bool Fraction::operator<=(const Fraction& f)
{
return (*this == f || *this < f);
}
#endif

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#ifndef EXERCISE_4_HPP_
#define EXERCISE_4_HPP_
#include <iostream>
class Card
{
public:
enum rank {ACE = 1, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING};
enum suit {CLUBS, DIAMONDS, HEARTS, SPADES};
Card(rank r = ACE, suit s = SPADES, bool ifu = true): m_Rank(r), m_Suit(s), m_IsFaceUp(ifu) { }
int GetValue() const;
void Flip();
// friend std::ostream& operator<<(std::ostream& s, const Card& aCard);
private:
rank m_Rank;
suit m_Suit;
bool m_IsFaceUp;
};
int Card::GetValue() const
{
int value = 0;
if (m_IsFaceUp)
{
value = m_Rank;
if (value > 10)
{
value = 10;
}
}
return value;
}
void Card::Flip()
{
m_IsFaceUp = !m_IsFaceUp;
}
#endif

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#include <iostream>
#include <functional>
#include <vector>
#include "exercise_1.hpp"
#include "exercise_2.hpp"
#include "exercise_3.hpp"
#include "exercise_4.hpp"
using namespace std;
void ex_1();
void ex_2();
void ex_3();
void ex_4();
int main()
{
ex_1();
ex_2();
ex_3();
return 0;
}
void ex_1()
{
Parallelogram Pgrm(15.2, 9.5);
Circle Crcl(14.5);
Rectangle Rctgl(14.0, 7.1);
Square Sqre(23.3);
Rhombus Rmbs(17.4, 13.2);
vector<reference_wrapper<Figure>> f;
f.push_back(Pgrm);
f.push_back(Crcl);
f.push_back(Rctgl);
f.push_back(Sqre);
f.push_back(Rmbs);
for (reference_wrapper<Figure> c : f)
c.get().area();
/*
* Площадь параллелограмма равна 144.4
* Площадь круга равна 660.52
* Площадь прямоугольника равна 99.4
* Площадь квадрата равна 542.89
* Площадь ромба равна 229.68
*/
}
void ex_2()
{
Minivan m("Макдоналдс", "ABC");
/*
* Транспортное средство компании Макдоналдс, модель ABC
* Легковой автомобиль компании Макдоналдс, модель ABC
* Автобус компании Макдоналдс, модель ABC
* Минивэн компании Макдоналдс, модель ABC
*/
}
void ex_3()
{
Fraction a(3, 9);
Fraction b(2, 3);
Fraction c; // 0
cout << "a = " << a << endl;
cout << "b = " << b << endl;
cout << "c = " << c << endl;
cout << "[a + b] " << a << " + " << b << " = " << a + b << endl;
cout << "[a - b] " << a << " - " << b << " = " << a - b << endl;
cout << "[a * b] " << a << " * " << b << " = " << a * b << endl;
cout << "[a / b] " << a << " / " << b << " = " << a / b << endl;
cout << "[c + b] " << c << " + " << b << " = " << c + b << endl;
cout << "[b + c] " << b << " + " << c << " = " << b + c << endl;
cout << "[c - b] " << c << " - " << b << " = " << c - b << endl;
cout << "[b - c] " << b << " - " << c << " = " << b - c << endl;
cout << "[c * b] " << c << " * " << b << " = " << c * b << endl;
cout << "[b * c] " << b << " * " << c << " = " << b * c << endl;
cout << "[c / b] " << c << " / " << b << " = " << c / b << endl;
cout << "[b / c] " << b << " / " << c << " = " << b / c << endl;
cout << "-a = " << -a << endl;
cout << "[a == b] " << a << " == " << b << " is " << ((a == b) ? "true" : "false") << endl;
cout << "[a != b] " << a << " != " << b << " is " << ((a != b) ? "true" : "false") << endl;
cout << "[a < b] " << a << " < " << b << " is " << ((a < b) ? "true" : "false") << endl;
cout << "[a <= b] " << a << " <= " << b << " is " << ((a <= b) ? "true" : "false") << endl;
cout << "[a > b] " << a << " > " << b << " is " << ((a > b) ? "true" : "false") << endl;
cout << "[a >= b] " << a << " >= " << b << " is " << ((a >= b) ? "true" : "false") << endl;
cout << "[c == a] " << c << " == " << a << " is " << ((c == a) ? "true" : "false") << endl;
cout << "[c != a] " << c << " != " << a << " is " << ((c != a) ? "true" : "false") << endl;
cout << "[c < a] " << c << " < " << a << " is " << ((c < a) ? "true" : "false") << endl;
cout << "[c <= a] " << c << " <= " << a << " is " << ((c <= a) ? "true" : "false") << endl;
cout << "[c > a] " << c << " > " << a << " is " << ((c > a) ? "true" : "false") << endl;
cout << "[c >= a] " << c << " >= " << a << " is " << ((c >= a) ? "true" : "false") << endl;
/*
* a = 3/9
* b = 2/3
* c = 0
* [a + b] 3/9 + 2/3 = 1
* [a - b] 3/9 - 2/3 = -1/3
* [a * b] 3/9 * 2/3 = 2/9
* [a / b] 3/9 / 2/3 = 1/2
* [c + b] 0 + 2/3 = 2/3
* [b + c] 2/3 + 0 = 2/3
* [c - b] 0 - 2/3 = -2/3
* [b - c] 2/3 - 0 = 2/3
* [c * b] 0 * 2/3 = 0
* [b * c] 2/3 * 0 = 0
* [c / b] 0 / 2/3 = 0
* [b / c] 2/3 / 0 = [На 0 делить нельзя!] 0
* -a = -3/9
* [a == b] 3/9 == 2/3 is false
* [a != b] 3/9 != 2/3 is true
* [a < b] 3/9 < 2/3 is true
* [a <= b] 3/9 <= 2/3 is true
* [a > b] 3/9 > 2/3 is false
* [a >= b] 3/9 >= 2/3 is false
* [c == a] 0 == 3/9 is false
* [c != a] 0 != 3/9 is true
* [c < a] 0 < 3/9 is true
* [c <= a] 0 <= 3/9 is true
* [c > a] 0 > 3/9 is false
* [c >= a] 0 >= 3/9 is false
*/
}