#include <iostream>
#include <cstring>

using namespace std;

class mystring {
    private:
        char *str;
        int countChars;

    public:
        friend ostream& operator<<(ostream &out, const mystring& string);
        mystring operator* (int val)
        {
            char* buffer = new char[countChars * val + 1];
            for (int i = 0; i < val; ++i)
            {
                for (int j = 0; j < countChars; ++j)
                {
                    buffer[i*countChars + j] = str[j];
                }
            }
            buffer[countChars*val + 1] = '\0';
            return mystring(buffer);
        }

         int Count(){
            return countChars;
        }

        bool HaveSubstring(const mystring& substring) const{ //Ïåðåäà÷à ïî ññûëêå, ÷òîáû íå áûëî ëèøíåãî êîïèðîâàíèÿ

             int posSubstring = 0;
             for (int i = 0; i < countChars; ++i)
             {
                 if (str[i] == substring.str[posSubstring]){
                    posSubstring++;
                    if (posSubstring == substring.countChars)
                    return true;
                 }
             else
                 posSubstring = 0;
             }

             return false;
             }

        mystring(const char *c = "")
        {
            str = new char[strlen(c)+1];
            register int i = 0;
            while(c[i])
            {
                str[i] = c[i];
                i++;
            }
            countChars = i;
            str[i] = '\0';
        }

        ~mystring() { cout << "destruct\n"; delete [] str; }
};

ostream& operator<<(ostream &out, const mystring& string)
{
    for (int i = 0; string.str[i]; ++i)
    {
        out << string.str[i];
    }
    return out;
}

int main()
{
    setlocale(LC_ALL, "Russian");
    {
        mystring a("Hello, friend."), c;



        cout << a << "\n" << endl;

        mystring b("friend");
        cout << "Prefix ((if yes: 1) or (if no: 0)): " << a.HaveSubstring(b) << endl;

        cout << "Count symbol: " << a.Count() << endl;
        cout << a*3 << "\n" << endl;

    }
    system("pause");
}