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发表于 2020-5-11 08:00:01
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显示全部楼层
#include "stdafx.h"
#include<iostream>
using namespace std;
class Vehicle{
public:
Vehicle(double x)
{
cost=x;
}
Vehicle()
{
cost=0;
}
~Vehicle(){}
virtual void show()
{
cout<<"I am a vehicle.";
}
virtual void costs()
{
cout<<"Cost is"<<cost;
}
private:
double cost;
};
class Car :public Vehicle{
public:
Car(double x)
{
cost=x;
}
~Car(){}
void show()
{
cout<<"I am a car.";
}
void costs()
{
cout<<"Cost is"<<cost;
}
private:
double cost;
};
class Truck:public Vehicle{
public:
Truck(double x)
{
cost=x;
}
~Truck(){}
void show()
{
cout<<"I am a truck.";
}
void costs()
{
cout<<"Cost is"<<cost;
}
private:
double cost;
};
void callcost(Vehicle &);
int main()
{
Vehicle vehi(1.5);
callcost(vehi);
Car c(3.8);
callcost(c);
Truck tr(5.8);
callcost(tr);
return 0;
}
void callcost(Vehicle & vehi)
{
vehi.show();
vehi.costs();
}
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