function pointer 예제

func_ptr.cpp

#include <iostream>

float add(const float& a, const float& b)

{

return a + b;

}

float multiply(const float& a, const float& b)

{

return a * b;

}

float worker(const float& a, const float& b, float(*func_ptr)(const float& a, const float& b))

{

return (*func_ptr)(a, b);

}

void main(void)

{

float a = 1.1f;

float b = 3.3f;

std::cout << add(a, b) << " " << std::endl;

std::cout << multiply(a, b) << " " << std::endl;

std::cout << std::endl;

float(*func_ptr)(const float& a, const float& b);

func_ptr = &add;

std::cout << func_ptr(a, b) << " " << std::endl;

func_ptr = &multiply;

std::cout << func_ptr(a, b) << " " << std::endl;

std::cout << std::endl;

std::cout << worker(a, b, &add) << " " << std::endl;

std::cout << worker(a, b, &multiply) << " " << std::endl;

std::cout << std::endl;

system("pause");

}