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Frequently Asked C++ interview questions and answers for freshers Page 14

(#M40030281) C++ QUESTION C++ Keep an EYE

Consider the declarations in question 19. Suppose
there are two functions: f has an argument
of type A and g has an argument of type B.
Which statement is correct? 􀀁
a) Both f(b) and g(b) are legal function calls.
b) f(b) is legal, but g(b) is not legal.
c) f(b) is not legal, but g(b) is legal.
d) Neither f(b) nor g(b) is a legal

Asked In C++ MAN (11 years ago)

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(#M40030278) C++ QUESTION C++ Keep an EYE

Consider the assignment statement a=b; (with
the variable declarations in the previous question).
Which answer is true?
a) The assignment statement is illegal.
b) The assignment statement activates the A
assignment operator.
c) The assignment statement activates the B
assignment operator.
d) The assignment statement activates both A and
B assignment operators

Asked In C++ MAN (11 years ago)

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(#M40030276) C++ QUESTION C++ Keep an EYE

In C++ what does the operator over loading
means.
a) Giving new meaning to existing C++ operators
b) Defining functionality of existing􀀁 C++ operator
for user define objects.
c) Defining new operators.

Asked In C++ MAN (11 years ago)

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(#M40030275) C++ QUESTION C++ Keep an EYE

Using the following declarations, which of the
following assignment statements are legal?
class A {...} ; class B: public A {...};
A a; B b, b1, b2;
a) a = b;
b) b = a;
c) b1 = b2;
d) Both (a) and (b) are legal, but not (c).
e) Both (a) and (c) are legal, but not (b).
f) Both (b) and (c) are legal, but not (a).

Asked In C++ MAN (11 years ago)

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(#M40030273) C++ QUESTION C++ Keep an EYE

What does the term “default parameter” mean in
C++?
a) It means that the compiler supplies default functionality
that you get for "free".
b) A parameter that C++ automatically supplies a
default value for.
c) Some C++ functions have all the parameters
written for you by the compiler
d) A parameter based on primitive C++ variable
types.

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(#M40030268) C++ QUESTION C++ Keep an EYE

What is the point in making a destructor "virtual"?
a) There is no value.
b) C++ uses it for memory leak detection.
c) It causes the derived class destructor to be
called upon delete.
d) A derived class destructor is always called, it just
changes the order of calling

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(#M40030267) C++ QUESTION C++ Keep an EYE

What is the primary value in using virtual functions
within C++?
a) They prevent the base class function from ever
being called.
b) They allow you to provide unique behavior for
derived classes.
c) Since they are "virtual" they sometimes don't
really exist.
d) Internet technologies

Asked In C++ MAN (11 years ago)

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(#M40028728) C++ QUESTION Technical Question on C++ and OOPS Keep an EYE

Can I create a operator** for "to-the-power-of" operations?

Asked In C++ MAN (12 years ago)

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(#M40028727) C++ QUESTION Technical Question on C++ and OOPS Keep an EYE

Can I overload operator== so it lets me compare two char[] using a string comparison?

Asked In C++ MAN (12 years ago)

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(#M40028726) C++ QUESTION Technical Question on C++ and OOPS Keep an EYE

What operators can/cannot be overloaded?

Asked In C++ MAN (12 years ago)

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