the output of the following code?
What is the output of the following code?
// CPP
// working of Virtual Functions
#include <iostream>
using namespace std;
class base {
public:
void fun_1() { cout << "base-1\n"; }
virtual void fun_2() { cout << "base-2\n"; }
virtual void fun_3() { cout << "base-3\n"; }
virtual void fun_4() { cout << "base-4\n"; }
};
class derived : public base {
public:
void fun_1() { cout << "derived-1\n"; }
void fun_2() { cout << "derived-2\n"; }
void fun_4(int x) { cout << "derived-4\n"; }
};
int main()
{
base* p;
derived obj1;
p = &obj1;
// Early binding because fun1() is non-virtual
// in base
p->fun_1();
// Late binding (RTP)
p->fun_2();
// Late binding (RTP)
p->fun_3();
// Late binding (RTP)
p->fun_4();
// Early binding but this function call is
// illegal(produces error) because pointer
// is of base type and function is of
// derived class
// p->fun_4(5);
}
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