Answer Posted / d.v.rama krishna

While Creating the user interface all the functions should
be public, and all the fuctions are pure virtual functions.

Here is the example code

#define interface struct

interface <inter face name >
{
virtual int add(int x, int y) =0;
};

class A : public <<inter face name>>
{
public:
.
.

int add (int x, int y);
};

int A:: add(int x, int y)
{
return x+y;
}

Is microsoft visual c++ important?

1016

---

What is vcredist_x86 exe?

985

---

What is visual c++ runtime error?

1130

---

What is microsoft visual c++ 2010 x86 redistributable?

959

---

Difference between critical section, mutex and semaphore.

1049

---

How do I reinstall microsoft visual c++?

933

---

What is microsoft visual c++ 2015 redistributable?

1037

---

Does visual c++ 2017 replace 2015?

928

---

What is the use of message map? Advantages of a message map.

948

---

What is cwinthread class? Explain its advantages.

962

---

What is the Use of the Developer Studio Editor?

2545

---

What is iunknown? Explain some of commonly used methods provided by iunknown.

1025

---

How you build a project using Developer Studio?

2229

---

What is the difference between turbo c++ and visual c++?

958

---

Do I need microsoft visual c++ on my computer?

979

---