#include <iostream>
#include <sstream>
#include <stdio.h>

using namespace std;

struct Printer
{
    template<typename T>
    Printer& operator+(T arg)
    {
        Stream << arg;
        return *this;
    }

    Printer& operator+(Printer& (*arg)(Printer&))
    {
        arg(*this);
        return *this;
    }

    void Flush()
    {
        printf("%s\n", Stream.str().c_str());
        Stream.str("");
    }

    stringstream Stream;
};

Printer& pend (Printer & print)
{
    print.Flush();
    return print;
}

int main()
{
    Printer print;

    print+"Hello "+"world"+pend;

    return 1;
}