C++ program for factorial using single inheritance

C++ program for factorial using single inheritance

#include<iostream>
using namespace std;
//main class
class factorial
{
	public:
	unsigned long long fact=1;
	int num;
	void display();	
};
//child class
class child_factorial: public factorial
{
	public:
	int input();
	void fact_function();
	
};

int child_factorial::input()
{
	cout<<"Please enter a number: ";
	cin>>num;
}

void child_factorial::fact_function()
{
	for(int i=1;i<=num;i++)
{
fact=fact*i;
}
}

void factorial::display()
{
	cout<<"Factorial of entered number is: "<<fact;
}

int main()
{
	child_factorial object;
	
	
	object.input();
	object.fact_function();
	object.display();
}

Output

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