#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <cstring>


using namespace std;

class String {

public:

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

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

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

    void SetString(const char new_str[]) {
        int new_space = strlen(new_str) + 1;
        if (capacity < new_space) {
            delete[] str;
            capacity = new_space;
            str = new char[capacity];
        }
        strcpy(str, new_str);
        size = capacity - 1;
    }

    const char* GetString() {
        return str;
    }

    void SetChar(const int index, const char ch) {
        if (index < 0 || index >= size) {
            cout << "Invalid index" << endl;
            return;
        }
        str[index] = ch;
    }

    char GetChar(const int index) {
        if (index < 0 || index >= size) {
            cout << "Invalid index" << endl;
            abort;
        }
        return str[index];
    }

    int Size() {
        return size;
    }

    int Capacity() {
        return capacity;
    }

    ~String() {
        delete[] str;
    }

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


int main() {
    String my_string;
    cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
    my_string.SetString("Hello");
    cout << my_string.GetString() << endl;
    cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
    my_string.SetString("Hello my dear friend");
    cout << my_string.GetString() << endl;
    cout << "Size: " << my_string.Size() << " Capacity: " << my_string.Capacity() << endl;
    my_string.SetChar(2, 'm');
    cout << my_string.GetString() << endl;
    cout << my_string.GetChar(1) << endl;
    String my_new_string("1234");
    cout << my_new_string.GetString() << endl;
    cout << "Size: " << my_new_string.Size() << " Capacity: " << my_new_string.Capacity() << endl;
}