gistfile1.h

#include <stdio.h>

struct Greeter {
    struct Greeter (*hello)(const char*);
};

struct Greeter hello(const char *name);

struct Greeter initialize()
{
    struct Greeter res;
    res.hello = hello;
    return res;
}

struct Greeter hello(const char *name)
{
    printf("hello, %s.\n", name);
    return initialize();
}


int main(int argc, char *argv[])
{
    struct Greeter me = initialize();

    me.hello("yaotti").
       hello("satzz").
       hello("hmsk");

    return 0;
}