Question

How to use base class and derived class in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

class Base {
	int a, b;
public:
	void set(int _a, int _b) {
		a = _a;
		b = _b;
	}
	void print_ab() {
		cout << a << " " << b << endl;
	}
};

class Derived : public Base {
	int c;
public:
	Derived(int _c) {
		c = _c;
	}
	void print_c() {
		cout << c << endl;
	}
};

int main()
{
	Derived o(100);

	o.set(34, 87);
	o.print_ab();    

	o.print_c();   

	return 0;
}

/*
run:

34 87
100

*/

 

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