C++ generic lambdas turn it into Lisp!

lisp.cpp

/**
 * Compile with GCC 4.9:
 * g++ -std=c++1y lisp.cpp
 */
#include <iostream>
#include <stdio.h>

auto terminal = [] (auto stream) {
    return [=] (auto func) {
        return func (stream);
    };
};

auto curry = [] (auto f) {
    return [=] (auto x) {
        return [=] (auto y) {
            return f(x, y);
        };
    };
};

auto fmap = [] (auto f) {
     return [=] (auto t) {
         return terminal (f (t));
     };
};

int main (int argc, char **argv)
{
    auto plus = [] (auto a, auto b) {
        return a + b;
    };

    std::cout << curry(plus) (2) (3) << std::endl;

    auto hello = [] (auto s) {
        fprintf(s, "Hello "); return s;
    };

    auto world = [] (auto s) {
        fprintf(s, "world "); return s;
    };

    auto endl = [] (auto s) {
        fprintf(s, "\n"); return s;
    };

    terminal (stdout)
        (fmap(hello))
        (fmap(world))
        (fmap(endl));

    return 0;
}