GPIO State Enum

#include <iostream>
#include <cstdint>

// Declare enum class PinState with underlying type uint8_t
// Values: Low, High
enum class PinState : uint8_t{
    Low=0,
    High
};
const char* toString(PinState s){
    const char *value = "0";
    if(s == PinState::Low){
        value = "LOW";
    }
    else if(s == PinState::High){
        value = "HIGH";
    }
    return value;
}

// Implement: const char* toString(PinState s)

int main() {
    int x;
    std::cin >> x;

    // x is guaranteed to be 0 or 1
    PinState s = (x == 0) ? PinState::Low : PinState::High;
    std::cout << toString(s);
    return 0;
}