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C++ Basic Questions 3

Submitted by bookman on Wed, 10/28/2009 - 09:53

C++ Basic Questions 3

Why would you use: public/private/protected inheritance?
Why does the language not define static virtual functions
Can you make a destructor virtual?
Why would you want a virtual destructor?
How would you print the first 10 characters of a string?
When would you use private inheritance?
How and why would you implement a '<<' operator for a String class?
When would you use a reference?
Why do you want to have virtual member functions? How was "it" done before vmf's came into existence? What was wrong with it?
Why is protected" as bad as ""public""?"
Give one example use of a static member.
Why did new (a new expression) have to be a language-level construct while malloc could be a library function?
What are the advantages and disadvantages of templates over plain old inheritance and heterogenous containers?
What are the problems with a tree-style hierarchy?
Why is iostream better than stdio? (There are umpteen reasons, I'm just talking about the type-safe answer...)
Why would someone want to have RTTI when there are virtual functions? Doesn't that sound contradicting in purpose? Discuss one situation where RTTI could be useful, if you think so.
Aren't templates glorified macros?
If you know exceptions, aren't you worried that they could turn out to be the modern "goto"? Why isn't it that bad in C++?
I would settle for "Why use const instead of #define?" as a question.
What's the difference between a declaration and a definition?
What's the difference between a struct and a class?
Describe for me in 100 words or less how to simulate a virtual table using C.
What is the difference between delete[] and delete?
I need to write Wombat objects to an ostream. Describe two ways to accomplish this and one way that won't work.
What's an initializer list?
Can you think of a 5 letter word to describe the following?
class {
int n;
public:
void setN(int);
int getN() const;
};

(One possible answer: "struct"...)
describe how you extend stdio to access streams that the original implementation never heard of (socket stream, etc.).
describe how you extend printf to support a new (user defined) type.

‹ C and C++ Basic Questians Set 1 up C++ Basic Set 1 ›

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