Help ! I still can't solve it

Question

Abstract Classes You are given a Vehicle base class, and two subclasses, Car and Bicycle. Both classes have a drive() method whi
#include <iostream>
using namespace std;

class Vehicle {
//complete the class definition

};

class Car: public Vehicle {
public:
void drive() {
cout << "Driving a car!"<<endl;
}
};

class Bicycle: public Vehicle {
public:
void drive() {
cout << "Driving a bicycle!"<<endl;
}
};

int main()
{
Car c;
Bicycle b;
Vehicle *v1 = &c;
Vehicle *v2 = &b;

v1->drive();
v2->drive();

return 0;
}

Answer 1

What do you mean? Please provide full information of your question, with a link to your code bits as attempt, not copy paste your code here.

Answer 2

You have to do class defination like this so other class can access their properties.

#include <iostream>
using namespace std;

class Vehicle {
//complete the class definition
public:
virtual void drive()=0;
};

class Car: public Vehicle {
public:
void drive() {
cout << "Driving a car!"<<endl;
}
};

class Bicycle: public Vehicle {
public:
void drive() {
cout << "Driving a bicycle!"<<endl;
}
};

int main()
{
Car c;
Bicycle b;
Vehicle *v1 = &c;
Vehicle *v2 = &b;

v1->drive();
v2->drive();

return 0;
}