functionPointers

#include <iostream>

void more() { std::cout << "More than ZERO!\n"; }
void less() { std::cout << "Less than ZERO!\n"; }
void zero() { std::cout << "ZERO!\n"; }
void funVal(int val) { std::cout << "FunVal statred! val = " << val << '\n'; }
void funVal1(int val) { std::cout << "FunVal1 statred! val = " << val << '\n'; }
int max(int a, int b) { return a > b ? a : b; };
int min(int a, int b) { return a < b ? a : b; };

int main()
{
    void(*numFun)() { nullptr };

    int num{};
    std::cout << "Enter number: ";
    std::cin >> num;

    //if (num == 0) { numFun = zero; };
    if (num > 0) { numFun = more; };
    if (num < 0) { numFun = less; };
    if (numFun) { numFun(); }
    else { std::cout << "numFun == nullptr!!!\n"; };

}