fp.cpp

#include <iostream>

int doAdd(int (*call)(int,int)) {
    return call(1,2);
}

int main() {
    struct Add {
        static int add(int a, int b) {
            return a + b;
        }
    };
    std::cout << doAdd(Add::add) << std::endl;
    return 0;
}

int doAdd(int (_call)(int,int)) {
struct closure{
closure(int (_c)(int,int)):m_callback(c);

    static int operator()(int a, int b);
    private:
        static int (*m_callback)(int,int);
};
closure cl(call);
return cl(1,2);

}