C++ program of polymorphism

In this program we will clear the concept of polymorphism, that how a single function can work for all classes.
The code is given below



//Code Starts
#include<iostream>
#include<conio.h>

using namespace std;

class apply{
public:
virtual void brak()=0;  // Creating pure virtual function
};

class bike:public apply  {   //inheriting a class
public:
virtual void brak()
{
cout<<"Break applied to Bike"<<endl;
}
};

class car: public apply{
public:
virtual void brak()   //calling virtual function
{
cout<<"Break applied to Car"<<endl;
}
};

class truck: public apply{
public:
virtual void brak()
{
cout<<"Break applid to Truck"<<endl;
}
};

class train: public apply
{
public:
virtual void brak()
{
cout<<"Break applied to Train";
}
};

void stop(apply* abc[], int size)  //creating a function of data type void
{
for(int i=0;i<size;i++)
{
abc[i] -> brak();  //storing value in pure virtual function by this pointer ->
}
}

int main()
{
int size=4;

apply* xyz[size];

xyz[0]= new bike();  // calling class at 0 index of loop
xyz[1]= new car();
xyz[2]= new truck();
xyz[3]= new train();

stop(xyz,size); //calling void function

getch();
}
//Code Ends

OUTPUT: