根据给定的汽车类vehicle（包含的数据成员有车轮个数wheels和车重weight）声明，完成其中成员函数的定义，之后再定义其派生类并完成测试。
小车类car是它的派生类，其中包含载人数passenger_load。每个类都有相关数据的输出方法。
Vehicle类声明如下：

#include<iostream>
using namespace std; 
class Vehicle 
{ 
	protected: 
		int wheels; 
		float weight; 
	public: 
		Vehicle(int wheels,float weight); 
		int get_wheels(); 
		float get_weight(); 
		float wheel_load(); 
		void show(); 
}; 

/* 请在这里填写答案 */

裁判测试程序样例：

int main () 
{ 
	Vehicle v(4,1000);
	v.show(); 
	Car car1(4,2000,5);  
	car1.show (); 
	return 0;
}

输出样例：

Type:Vehicle
Wheel:4
Weight:1000kg
Type:Car
Type:Vehicle
Wheel:4
Weight:2000kg
Load:5 persons

作答

Vehicle::Vehicle(int wheels,float weight)
{
	this->wheels=wheels;//注意注意注意！！！！ 
	this->weight=weight;//注意注意注意！！！！ 
}

int Vehicle::get_wheels()
{
	return wheels;
}

float Vehicle::get_weight()
{
	return weight;
}

float Vehicle::wheel_load()
{
	;
}
void Vehicle::show()
{
	cout<<"Type:Vehicle"<<endl;
	cout<<"Wheel:"<<get_wheels()<<endl;
	cout<<"Weight:"<<get_weight()<<"kg"<<endl;
}

class Car:public Vehicle{
	private:
		int passenger_load;
	public:
		Car(int wheels,float weight,float passenger):Vehicle(wheels,weight)
		{
			passenger_load=passenger;
		}
		void show()
		{
			cout<<"Type:Car"<<endl;
			Vehicle::show();//Attention!!!!!!!!!!
			cout<<"Load:"<<passenger_load<<" persons"<<endl;
		 } 
};

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