#include <iostream>
using namespace std;
class vehicle {
protected:
int wheels;
float weight;
public:
void initialize(int in_wheels, float in_weight);
int get_wheels(void) {
return wheels;
}
float get_weight(void) {
return weight;
}
float wheel_loading(void) {
return weight / wheels;
}
};
class car: public vehicle {
int passenger_load;
public:
void initialize(int in_wheels, float in_weight, int people = 4);
int passengers(void) {
return passenger_load;
}
};
class truck: public vehicle {
int passenger_load;
float payload;
public:
void init_truck(int how_many = 2, float max_load = 24000.0);
float efficiency(void);
int passengers(void) {
return passenger_load;
}
};
main() {
vehicle unicycle;
unicycle.initialize(1, 12.5);
cout << "The unicycle has " << unicycle.get_wheels() << " wheel.\n";
cout << "The unicycle's wheel loading is " << unicycle.wheel_loading() << " pounds on the single tire.\n";
cout << "The unicycle weighs " << unicycle.get_weight() << " pounds.\n\n";
car sedan;
sedan.initialize(4, 3500.0, 5);
cout << "The sedan carries " << sedan.passengers() << " passengers.\n";
cout << "The sedan weighs " << sedan.get_weight() << " pounds.\n";
cout << "The sedan's wheel loading is " << sedan.wheel_loading() << " pounds per tire.\n\n";
truck semi;
semi.initialize(18, 12500.0);
semi.init_truck(1, 33675.0);
cout << "The semi weighs " << semi.get_weight() << " pounds.\n";
cout << "The semi's efficiency is " << 100.0 * semi.efficiency() << " percent.\n";
}
// initialize to any data desired
void
vehicle::initialize(int in_wheels, float in_weight) {
wheels = in_wheels;
weight = in_weight;
}
void car::initialize(int in_wheels, float in_weight, int people) {
passenger_load = people;
wheels = in_wheels;
weight = in_weight;
}
void truck::init_truck(int how_many, float max_load) {
passenger_load = how_many;
payload = max_load;
}
float truck::efficiency(void) {
return payload / (payload + weight);
}
