#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <cstring>
#include <string>


using namespace std;

class String {

public:

	String() : size(0), capacity(15), str(new char[15]) {
		total_number_strings++;
	}

	String(const int string_capacity) : size(0), capacity(string_capacity), str(new char[string_capacity]) {
		total_number_strings++;
	}

	String(const char new_str[]) {
		capacity = strlen(new_str) + 1;
		str = new char[capacity];
		strcpy(str, new_str);
		size = capacity - 1;
		total_number_strings++;
	}

	String(const String& other) : size(other.size), capacity(other.capacity), str(new char[capacity]) {
		strcpy(str, other.str);
		total_number_strings++;
	}

	String& operator=(const String& other) {
		size = other.size;
		capacity = other.capacity;
		delete[] str;
		str = new char[capacity];
		strcpy(str, other.str);
		return *this;
	} // перегрузка оператора присваивания =

	char& operator[] (const int index) {
		if (index < 0 || index >= size) {
			cout << "Invalid index" << endl;
			abort;
		}
		return str[index];
	} // перегрузка оператора индексирования (сеттер)

	char operator[] (const int index) const {
		if (index < 0 || index >= size) {
			cout << "Invalid index" << endl;
			abort;
		}
		return str[index];
	} // перегрузка оператора индексирования для константных объектов

	bool operator==(const String& right) const {
		if (right.size != size) {
			return false;
		}
		for (int i = 0; i < size; i++) {
			if (str[i] != right.str[i])
				return false;
		}
		return true;
	}

	bool operator!=(const String& right) const {
		return !(*this == right);
	}

	int Size() const {
		return size;
	}

	int Capacity() const {
		return capacity;
	}

	static int GetTotalNumberStrings() {
		return total_number_strings;
	}

	~String() {
		delete[] str;
		total_number_strings--;
	}

private:
	int size;
	int capacity;
	char* str;
	static int total_number_strings;
};

ostream& operator<<(ostream& output, const String& string) {
	for (int i = 0; i < string.Size(); i++) {
		output << string[i];
	}
	return output;
}

//istream& operator>>(istream& input, String& string) {
//
//}


int String::total_number_strings = 0;


int main() {
	String my_string;
	cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
	my_string = "Hello";

	cout << my_string << endl;

	cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
	my_string = "Hello my dear friend";
	cout << my_string << endl;
	cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
	my_string[2] = 'm';
	cout << my_string << endl;
	cout << my_string[1] << endl;
	String my_string2("1234");
	cout << my_string2 << endl;
	cout << "Size: " << my_string2.Size() << " Capacity: " << my_string2.Capacity() << endl;
	const String my_string3(my_string);
	cout << my_string3[1] << endl;
	cout << my_string3<< endl;
	cout << String::GetTotalNumberStrings() << endl;
	cout << (my_string == my_string2) << endl;
	cout << (my_string != my_string2) << endl;
	String my_string4;
	my_string4 = my_string;
	cout << my_string4 << endl;
	my_string4 = "Hello";
	cout << my_string4 << endl;

	string str;
	cin >> str;
	cout << str << endl;
}