Define namespace.

C++ Interview Questions and Answers

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5. Define namespace.

It is a feature in C++ to minimize name collisions in the global name space. This namespace keyword assigns a distinct name to a library that allows other libraries to use the same identifier names without creating any name collisions. Furthermore, the compiler uses the namespace signature for differentiating the definitions.

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Other Interview Questions

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• What is a modifier?
• What is an accessor?
• Differentiate between a template class and class template.
• When does a name clash occur?
• Define namespace.
• What is the use of ‘using’ declaration.
• What is an Iterator class?
• What is an incomplete type?
• What is a dangling pointer?
• Differentiate between the message and method.
• What is an adaptor class or Wrapper class?
• What is a Null object?
• What is class invariant?
• What do you mean by Stack unwinding?
• Define precondition and post-condition to a member function.
• What are the conditions that have to be met for a condition to be an invariant of the class?
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• What is an orthogonal base class?
• What is a container class? What are the types of container classes?
• How do you write a function that can reverse a linked-list?
• What is polymorphism?
• How do you find out if a linked-list has an end? (i.e. the list is not a cycle)
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• What is pure virtual function?
• Write a Struct Time where integer m, h, s are its members
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• What is the difference between realloc() and free()?
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• What is an object?
• How can you tell what shell you are running on UNIX system?
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• What is a COPY CONSTRUCTOR and when is it called?
• What is Boyce Codd Normal form?
• What is virtual class and friend class?
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• What do you mean by binding of data and functions?
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• Anything wrong with this code? T *p = 0; delete p;
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• Will it execute or not?
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