функция 3 - 17

#include <iostream>
#include <string>
using namespace std;
void func(std::string str,string::size_type k = 0, string::size_type pos = 0)
{
	k = str.find(".", pos);
	if (k != string::npos)
	{
		str.insert (k+1,"...");
		pos = k+3;
		k = str.find (".",pos);
		cout << str << endl;
	}
	func(str, k, pos);
}
int main ()
{
    setlocale(LC_ALL, "Russian");
	string::size_type k, pos;
    string str;
    getline(cin, str);
    func(str, k, pos);
	cout << str << endl;
    system("pause");
    return 0;
}