geekbrains_oop_cpp/lesson_3/main.cpp

#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();
	ex_4();

	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
	 */
}

void ex_4()
{

}