Untitled

import 'dart:io';
class Car {
    int _speed = 0;

    int get speed => _speed;

    set speed(int cekKecepatan) {
        if(cekKecepatan > 200) {
            _speed = cekKecepatan;
        } else {
            print('Ha ha kurang cepat');
            exit(400);
        }
    }
}

void main() {
    Car cobaCek = Car();

    cobaCek.speed = 160;
    var cepat = cobaCek.speed;
    
    print('Kecepatan kamu $cepat');
}