PWM Register Access Control

#include <iostream>

class PWMDriver {
private:
    int ccr_reg;
public:
    // TODO: This member is exposed. Encapsulate it.
    // TODO: Ensure valid range [0, 100].

    PWMDriver() : ccr_reg(0) {}
    void setter(int ccrr) {
        if (ccrr > 100) ccrr = 100;
        if (ccrr < 0) ccrr = 0;
        ccr_reg = ccrr;}
    // TODO: Add getter if necessary for printing
    int getter () {return ccr_reg;}
};

int main() {
    int N;
    if (!(std::cin >> N)) return 0;

    PWMDriver driver;

    for (int i = 0; i < N; ++i) {
        int val;
        std::cin >> val;

        // TODO: Refactor this access to use a safe setter method
        driver.setter(val);

        // Output current state
        std::cout << "CCR: " << driver.getter() << std::endl;
    }

    return 0;
}

Solving Approach