PWM Configuration Defaults

#include <iostream>
using namespace std;

void setPWM(int duty, int frequency = 1000, int deadtime = 0)
{
    if ( duty < 0 || duty > 100 )
        cout << "Inncorrect duty: " << duty << endl;
    if ( frequency < 1 || frequency > 100'000 )
        cout << "Inncorect frequency: " << frequency << endl;
    if ( deadtime < 0 || deadtime > 1'000)
        cout << " Inncorect deadtime: " << deadtime << endl;

    cout << duty << " " << frequency << " " << deadtime << endl;
}

int main() {
    int duty, mode;
    cin >> duty >> mode;

    if (mode == 0) {
        setPWM(duty);
    }
    else if (mode == 1) {
        int frequency;
        cin >> frequency;
        setPWM(duty, frequency);
    }
    else if (mode == 2) {
        int frequency, deadtime;
        cin >> frequency >> deadtime;
        setPWM(duty, frequency, deadtime);
    }

    return 0;
}

Solving Approach