编程日记19

题目一

【问题描述】

要求：（1)实现交通工具这个类；（2）定义并实现一个小车类car，是它的公有派生类，小车本身的私有属性有载人数，小车的函数有构造函数，getpassenger(获取载人数)，print（打印车轮数，重量和载人数）。

【输入形式】

vehicle input：4 50

car input：4 45 5

【输出形式】

vehicle is:车轮数：4，重量：50

car is:车轮数：4，重量：45

可载人数：5

【代码】

#include <iostream>
using namespace std;
class vehicle
{protected:
int wheels;
float weight;
public:
vehicle(int awheels,float aweight);
int get_wheels();
float get_weight();
void print();
};

vehicle::vehicle(int awheels,float aweight)
{wheels=awheels;
 weight=aweight;
}
int vehicle::get_wheels()
{return wheels;
}
float vehicle::get_weight()
{return weight;}
void vehicle::print()
{cout<<"车轮数："<<wheels<<"，重量："<<weight<<endl;}

class car:public vehicle
{private:
int passengers;
public:
car(int awheels,float aweight,int pass);
int getpassenger();
void print();
};
car::car(int awheels,float aweight,int pass):vehicle(awheels,aweight)
{
passengers=pass;}
int car::getpassenger()
{return passengers;}
void car::print()
{
cout<<"车轮数："<<wheels<<"，重量："<<weight<<endl;
cout<<"可载人数："<<passengers<<endl;
}
int main()
{
	int wheels;
	float weight;
	int pass;
	cout<<"vehicle input:";
	cin>>wheels>>weight;
	vehicle v1(wheels,weight);
	cout<<"car input:";
	cin>>wheels>>weight>>pass;	
	car c1(wheels,weight,pass);
	cout<<endl;
	cout<<"vehicle is:";
	v1.print();		
	cout<<"car is:";
	c1.print();
	return 0;
}