Untitled5.cpp

/*
Write clean code
	- Do proper indentation
		// This one is bad
		void main()
		{
		int a=0;
		for(int x=0;x<3;x++)
		count<<x;
		}
		// This is good
		void main()
		{
			int a = 0;
			for(int x = 0; x < 3; x++)
				count << x;
		}

	- give prover spacing
		// bad
		int a=b+c/3;
		// good
		int a = b + c / 3;



		"Any fool can write a code that
		a machine can understand, a programmer
		writes a code that a humans can understand."
							- Mertin Fowller
		
		Do read this article
		https://blog.alexdevero.com/6-simple-tips-writing-clean-code/
*/








#include <iostream>

using namespace std;

class classa{
public:
	virtual void display(){
		cout << "class a"<<endl;
	}

	virtual void objects() = 0;
};


class classb: public classa{
public:
	void display(){
		cout<<"class b \n";
	}

	void objects(){
		cout<< "you choose a bat" << endl;
	}

	int sum(int a, int b){
		int c;
		c = a + b;
		return c;
	}

	int sum(int a, int b, int c){
		int d;
		d = a + b + c;
		return d;
	}

};


class classc: public classa{
	public:
	void objects(){
		cout<< "you choose a cat" << endl;
	}
};





int main() {
	
	
	// overloading objects function
	
	cout << "hey! lets play a game \n\n";
	cout << "It is a game of luck! what do you want bat or cat??? \n\n";
	cout << "1-b \n\n2-c \n\n";
	
	int choice;
	
	cout << "enter 1 or 2 = ";
	cin >> choice;
	
	classa * a;
	classb b;
	classc c;

	if (choice==1){
		a=&b;
		a->objects();
	}
	else{
		a=&c;
		a->objects();
	}



	cout<<"\n\n\n\n\nsome examples of polymorphism\n\n";

	classa *aa;

	// function overriding 
	aa->display();
	b.display();

	//runtime polymorphism virtual func
	classa * p = new classb;  
	p->display();


	//function overloading
	int sum;

	sum = b.sum(2,4,8);
	cout << "3 parameter sum = "<<sum<<endl;
	
	sum = b.sum(2,4);
	cout << "2 parameter sum = "<<sum<<endl;
}