实验四
作者:互联网
#ifndef BATTERY_HPP #define BATTERY_HPP class Battery { private:double capacity; public:Battery(double ca = 70) :capacity(ca) {} double get_capacity() const { return capacity; } }; #endif
#ifndef ELECTRICCAR_HPP #define ELECTRICCAR_HPP #include"car.hpp" #include"battery.hpp" #include<string> #include<iostream> using namespace std; class ElectricCar :public Car { private:Battery battery; public:ElectricCar(string ma, string mo, int ye); //ElectricCar(const Car& obj); void info(); }; ElectricCar::ElectricCar(string ma, string mo, int ye) { car(ma, mo, ye); } void ElectricCar::info() { cout << "maker: " << get_maker() << endl << "model: " << get_model() << endl << "year: " << get_year() << endl << "odometers: " << get_odometers() << endl << "capacity: " << battery.get_capacity() <<"-kWh" << endl; } #endif
#ifndef CAR_HPP #define CAR_HPP #include<string> #include<iostream> using namespace std; class Car { private:string maker, model; int year; double odometers=0; public:Car() {} Car(string ma, string mo, int ye) :maker(ma), model(mo), year(ye) {} ~Car() {} void info(); void update_odometers(double odo); string get_maker() const { return maker; } string get_model() const{ return model; } int get_year() const { return year; } double get_odometers() const { return odometers; } void car(string ma, string mo, int ye) { maker = ma; model = mo; year = ye; } }; void Car::info() { cout << "maker: " << maker << endl << "model: " << model << endl << "year: " << year << endl << "odometers: " << odometers << endl; } void Car::update_odometers(double odo) { if (odo < odometers) cout << "数值有误" << endl; else odometers = odo; } #endif
task4
#ifndef PETS_HPP #define PETS_HPP #include<iostream> #include<string> using namespace std; class MachinePets { private:string nickname; public:MachinePets() {} MachinePets(const string s) :nickname(s) {} ~MachinePets() {} virtual string talk() { return ""; } string get_nickname() { return nickname; } void machinepets(const string s) { nickname = s;} }; class PetCats :public MachinePets { public:PetCats(const string s) { machinepets(s); } string talk() { return "miao wu"; } }; class PetDogs :public MachinePets { public:PetDogs(const string s) { machinepets(s); } string talk() { return "wang wang"; } }; #endif
标签:return,string,HPP,实验,const,include,public 来源: https://www.cnblogs.com/qf20020802/p/15611716.html