Question

How to use simple class with derived class in C++

Answer 1

#include <iostream>

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

class Base {
	char s[30];
public:
	Base(char *_s) {
		strcpy(s, _s);
	}
	char *getString() {
		return s;
	}
};

class Derived : public Base {
	int slen;
public:
	Derived(char *_s) : Base(_s) {
		slen = strlen(_s);
	}
	int getlen() {
		return slen;
	}
	void print() {
		cout << getString() << endl;;
	}
};

int main()
{
	Derived o("C++ Programming");

	o.print();
	cout << o.getlen() << endl;

	return 0;
}


/*
run:

C++ Programming
15

*/

 

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