Do you know the use of vtable?

0 Answers  

---

What is istream c++?

0 Answers  

---

What are files in c++?

0 Answers  

---

What are move semantics?

0 Answers  

---

how many controls can we place on single form.

1 Answers   Microsoft,

---

Compare compile time polymorphism and Runtime polymorphism

1 Answers  

---

class Alpha { public: char data[10000]; Alpha(); ~Alpha(); }; class Beta { public: Beta() { n = 0; } void FillData(Alpha a); private: int n; }; How do you make the above sample code more efficient? a) If possible, make the constructor for Beta private to reduce the overhead of public constructors. b) Change the return type in FillData to int to negate the implicit return conversion from "int" to "void". c) Make the destructor for Alpha virtual. d) Make the constructor for Alpha virtual. e) Pass a const reference to Alpha in FillData

2 Answers   Quark,

---

What is a constructor in c++ with example?

0 Answers  

---

Why pure virtual functions are used if they don't have implementation / When does a pure virtual function become useful?

1 Answers  

---

Is c the same as c++?

0 Answers  

---

Can we have "Virtual Constructors"?

10 Answers   TCS,

---

What is a class definition?

0 Answers  

---