How do you know that your class needs a virtual destructor?

5 Answers   Lucent,

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class A { public: void f(); protected: A() {} A(const A&){} }; Examine the class declaration shown above. Why are the default and copy constructors declared as protected? 1. To ensure that A cannot be created via new by a more derived class 2. To ensure that A cannot be copied 3. To ensure that A cannot be used as a base class except when public inheritance has been used 4. To ensure that A cannot be created/copied outside the inheritance chain 5. To ensure that A cannot be instantiated as a static variable

1 Answers  

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They will ask u question about single linked list?. Write Code for to insert delete node.

2 Answers   Persistent,

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How does atoi function work?

0 Answers  

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Write a recursive program to calculate factorial in c++.

0 Answers  

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Write a short code using c++ to print out all odd number from 1 to 100 using a for loop

0 Answers  

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How does throwing and catching exceptions differ from using setjmp and longjmp?

1 Answers  

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What is the prototype of printf function?

0 Answers  

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What does asterisk mean in c++?

0 Answers  

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What is a container class?

0 Answers  

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What is enum c++?

0 Answers  

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Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

0 Answers   CTS,

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