строки 2 - 7

setlocale(LC_ALL, "Russian");
    string sub, s;
    cout << "Введите строку 1: ";
    getline(cin,s);
    cout << "Введите строку 2: ";
    cin >> sub;
	string::size_type i = s.find(sub);
    /*string::size_type j = s.empty();
	if (j == s.empty())
	{
		s.erase(j,s.size());
	}*/
	for (int i = 0; i < s.length(); i++)
	{
		if (s[i] == ';' || s[i] == '!' || s[i] == ' ' || s[i] == ',' || s[i] == '.')
	{ s.erase(i,1);}
    if (s.find(sub)==i)
    {
        s.erase(i,sub.size());
	}
	}
    cout << s << endl;
    system("pause");
    return 0;
}