[tutorial] Function pointer

#include <iostream>

int add(int a, int b) {
    return a + b;
}

int main(void) {

    // [return type] (*pointer_name)[(list of parameters)]
    //int (*fn_ptr)(int, int) = add;

    typedef int (*add_funPtr)(int, int);
    add_funPtr fn_ptr = add;

    int a, b;

    std::cout << "enter an integer number: ";
    std::cin >> a;

    std::cout << "and another: ";
    std::cin >> b;

    a = fn_ptr(a, b);
    std::cout << "the sum is " << a << std::endl;
    unsigned char* cPtr = reinterpret_cast<unsigned char*>(fn_ptr);

    for (size_t i = 0; i < 200; i++) {
        std::cout << (std::hex) << static_cast<int>(*cPtr++) << " ";
    }

    return 0;
}