POJ C + + programming programming task-polymorphism and virtual functions

Programming Questions #3

Source: POJ (Coursera statement: The exercises completed on POJ will not count against the final results of Coursera. )

Note: Total time limit: 1000ms memory limit: 65536kB

Describe

The following program outputs the result:

A::fun

A::D o

A::fun

C::D o

Please fill in the blanks:

#include <iostream>using namespace Std;class A {    private:        int nval;    Public:        void Fun ()        {cout << "a::fun" << Endl;}        virtual void do ()        {cout << "A::D o" << Endl;}; Class B:public A {public    :        virtual void do ()        {cout << "B::D o" << Endl;}}; Class C:public B {public    :        void Do ()        {cout << "C::D o" << Endl;}        void Fun ()        {cout << "c::fun" << Endl;}}; void call (//Add your code here        ) {    p->fun (); P->do ();} int main () {call    (new A ());    Call (new C ());    return 0;}

Input

No

Output

A::fun

A::D o

A::fun

C::D o

Sample input

No

Sample output

A::funa::D oa::func::D o

#include <iostream>
using namespace Std;
Class A {
Private
    int nval;
Public
    void Fun ()
    {cout << "a::fun" << Endl;}
    virtual void do ()
    {cout << "A::D o" << Endl;}
};
Class B:public A {
Public
    virtual void do ()
    {cout << "B::D o" << Endl;}
};
Class C:public B {
Public
    void Do ()
    {cout << "C::D o" << Endl;}
    void Fun ()
    {cout << "c::fun" << Endl;}
};
void Call (
Add your code here
A *p
) {
    P->fun (); P->do ();
}
int main () {
    Call (new A ());
    Call (new C ());
    return 0;
}

POJ C + + programming programming task-polymorphism and virtual functions