post waifu/headphones/dildo

#include <iostream>
#include <functional>

using namespace std;

function<int(int)> gensq();

int main(int argc, char **argv){
    cout << gensq()(4) << "\n";
    cout << gensq()( [](){ return 12 * 2; }() );
    return 0;
}

function<int(int)> gensq(){
    return [](int x){ return x * x; };
}