编写一个程序,设计一个汽车类vehicle,包含的属性有车轮个数wheels和车重weight。小车类car是vehicle的子类,其中包含的属性有载人数loader。卡车类truck是car类的子类
时间: 2023-05-31 15:18:44 浏览: 165
### 回答1:
这个程序设计了一个汽车类("Vehicle"),它包含两个属性,车轮数量("wheels")和车重("weight")。小汽车类("Car")是Vehicle的子类,它继承了Vehicle的属性,并增加了一个载人数属性("loader")。卡车类("Truck")也是Vehicle的子类,它继承了Vehicle的属性,但没有增加额外的属性。
### 回答2:
编写一个程序,设计一个汽车类Vehicle,包含的属性有车轮个数wheels和车重weight。小车类Car是Vehicle的子类,其中包含的属性有载人数loader。卡车类Truck是Car类的子类。
首先,定义Vehicle类:
```python
class Vehicle:
def __init__(self, wheels, weight):
self.wheels = wheels
self.weight = weight
```
定义Car类,继承Vehicle类:
```python
class Car(Vehicle):
def __init__(self, loader, wheels, weight):
super().__init__(wheels, weight)
self.loader = loader
```
定义Truck类,继承Car类:
```python
class Truck(Car):
def __init__(self, cargo, loader, wheels, weight):
super().__init__(loader, wheels, weight)
self.cargo = cargo
```
在程序运行时,可以分别创建Vehicle、Car和Truck对象,并且可以对它们的属性进行操作:
```python
# 创建Vehicle对象
vehicle = Vehicle(4, 1000)
# 创建Car对象
car = Car(5, 4, 1500)
# 创建Truck对象
truck = Truck(5000, 2, 5000, 10000)
# 访问Vehicle属性
print("Vehicle has", vehicle.wheels, "wheels and weight", vehicle.weight)
# 访问Car属性
print("Car has", car.wheels, "wheels, weight", car.weight, "and can load", car.loader, "people")
# 访问Truck属性
print("Truck has", truck.wheels, "wheels, weight", truck.weight, "can load", truck.loader, "people and carry", truck.cargo, "kg of cargo")
```
在以上代码中,我们创建了一个Vehicle对象vehicle,它有4个车轮,重量为1000kg;一个Car对象car,它有4个车轮,重量为1500kg,能够载5个人;以及一个Truck对象truck,它有2个车轮,重量为10000kg,能够载2个人,同时能够搭载5000kg的货物。最后,我们访问了这些对象的属性,并打印出了相应的信息。
在实际开发中,需要根据实际需求来设计类的属性和方法。对于一个汽车类,可能还需要添加一些其他的属性,比如马力、牌照号等等。同时,可能还需要添加一些方法,比如加速、刹车等等。在编写类的过程中,需要考虑到类之间的继承关系,使得代码更加灵活、易于维护。
### 回答3:
编写一个程序,设计一个汽车类Vehicle,包含的属性有车轮个数wheels和车重weight。小车类Car是Vehicle的子类,其中包含的属性有载人数loader。卡车类Truck是Car类的子类。
在编写该程序时,首先需要定义一个Vehicle类。这个类要包含wheels和weight属性,并有方法来获取和设置这两个属性的值。
然后,定义一个Car类,该类继承自Vehicle类。除了继承Vehicle类中的wheels和weight属性之外,Car类还应包含loader属性。在Car类中定义一个方法来获取和设置这个属性。
最后,定义一个Truck类,该类继承自Car类。除了继承Car类中的wheels、weight和loader属性之外,Truck类还应包含load属性。在Truck类中定义一个方法来获取和设置这个属性。
下面是代码示例:
class Vehicle:
def __init__(self, wheels, weight):
self.wheels = wheels
self.weight = weight
def set_wheels(self, num_wheels):
self.wheels = num_wheels
def set_weight(self, weight):
self.weight = weight
def get_wheels(self):
return self.wheels
def get_weight(self):
return self.weight
class Car(Vehicle):
def __init__(self, wheels, weight, loader):
super().__init__(wheels, weight)
self.loader = loader
def set_loader(self, loader):
self.loader = loader
def get_loader(self):
return self.loader
class Truck(Car):
def __init__(self, wheels, weight, loader, load):
super().__init__(wheels, weight, loader)
self.load = load
def set_load(self, load):
self.load = load
def get_load(self):
return self.load
# 示例程序
vehicle1 = Vehicle(4, 1000)
print("车轮个数: ", vehicle1.get_wheels())
print("车重: ", vehicle1.get_weight())
car1 = Car(4, 1200, 4)
print("车轮个数: ", car1.get_wheels())
print("车重: ", car1.get_weight())
print("载人数: ", car1.get_loader())
truck1 = Truck(6, 4000, 2, 5000)
print("车轮个数: ", truck1.get_wheels())
print("车重: ", truck1.get_weight())
print("载人数: ", truck1.get_loader())
print("载重: ", truck1.get_load())