PWM Register Access Control

#include <iostream>

class PWMDriver {
public:
    // TODO: This member is exposed. Encapsulate it.
    // TODO: Ensure valid range [0, 100].
    PWMDriver() : ccr_reg(0) {}
    void set_ccr_reg(int val)
    {
        if(val > 100)
            val = 100;
        else if(val < 0)
            val = 0;

        ccr_reg = val;
    }

    int get_ccr_reg(void) const
    {
        return ccr_reg;
    }
private:
    int ccr_reg;

    // TODO: Add getter if necessary for printing
};

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.set_ccr_reg(val);

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

    return 0;
}

Solving Approach