Sensor Filter Selection

#include <iostream>
#include <string>
using namespace std;

// Write your enum and function here
typedef enum {
    NONE,
    LOW,
    HIGH
} FilterMode;

int readSensor(int raw, FilterMode filter = NONE) {
    int result = 0;

    if (NONE == filter) {
        result = raw;
    } else if (LOW == filter) {
        result = raw / 2;
    } else if (HIGH == filter) {
        result = raw / 4;
    } else {
        // do nothing
    }

    return result;
}

int main() {
    int raw, modeFlag;
    cin >> raw >> modeFlag;

    if (modeFlag == 0) {
        cout << readSensor(raw);
    } else {
        string filterName;
        cin >> filterName;

        FilterMode filter;

        if (filterName == "LOW") {
            filter = LOW;
        } else {
            filter = HIGH;
        }

        cout << readSensor(raw, filter);
    }

    return 0;
}