Operator overloading is
Making C++ operators work with objects
Making C++ operators more then they can handle
Giving new meaning to existing c++ operators
Making new C++ operators
Correct Answer :
C. Giving new meaning to existing c++ operators
Related Questions
Which of the following can legitimately be passed to a function?
A constant
A variable
A structure
A header file
Organizing data with methods that operate on the data and creating a new data type is called encapsulation.
True
False
Which of the following is true about const member functions?
const members can be invoked on both const as well as nonconst objects
const members can be invoked only on const objects and not on nonconst objects
nonconst members can be invoked on const objects as well as nonconst objects
none of the above
By default, members cannot be inherited.
True
False
In C++, the keyword auto can be used for
Automatic assignment of data to object during instantiation
Automatic call of a function
To declare a local variable
It is not a keyword in C++
new operator is used
To dynamically allocate storage
To statically allocate storage
To allocate storage for a new variable
None of the above are correct
The members of a class by default are private.
True
False
Private data members can be accessed
Only from the base class itself
Both from the base class and form its derived classes
From the class which is a friend of the base class
None of the above is correct
Overloaded functions
Are a group of functions with the same name
All have the same number and types of arguments
Make life simpler for programmer
May fail unexpectedly due to stress
In a class, only the member function can access data, which is not accessible to outside. This feature is called:
Data security
Data hiding
Data manipulation
Data definition
iostream is inheried from istream, ostream and ios class.
True
False
Which of the following relationship is known as inheritancerelationship?
‘has-a’ relationship
‘is-a’ relationship
association relationship
none of the above
One of the major disadvantage with late binding is
the source code should be made available at compile time
the program runs slower
dynamic variables can not be used in the program
static variables can not be used
Classes are useful because they
Are removed from memory when not in use
Permit data to be hidden from other classes
Bring together all aspects of an entity in one place
Can closely model objects in the real world
In a for loop with a multi-statement loop body, semicolons should appear following
The for statement itself
The closing brace in a multi-statement loop body
Each statement within the loop body.
The test expression
A direct access file is:
A file in which recoreds are arranged in a way they are inserted in a file
A file in which records are arranged in a particular order
Files which are stored on a direct access storage medium
None of the above
Element double Array[7] is which element of the array?
sixth
seventh
eighth
impossible to tell
The signature of a function is
The return type
The number and type of arguments
The class of a function
None of the above
Class members are _______________ by default
Private
protected
public
None of the above are correct
"[]" Operator is a unary operator.
True
False
The && and || operators
Compare two numeric values
Combine two numeric values
Compare two Boolean values
Combine two Boolean values
The getch() library function
Returns a character when any key is pressed
Returns a character when ENTER is pressed
Display a character on the screen when a key is pressed
Does not display a character on the screen
_____________ operator must have one class object
+
new
all
None of these
A base class is inherited by
derived class
inline function
constructor
none of the above
By using protected, one can create class members that are private to their class but
that can not be inherited and accessed by a derived class
that can still be inherited and accessed by a derived class
that can be public
none of the above
In C++, the exception handler is invoked with a-
try block
throw exception
catch function
abort()
The declaration int **var1; shows that
var1 can not be accessed
var1 is a pointer to a pointer of type int
var1 is a protected data type of integer
this type declaration shows an error
A normal C++ operator that acts in a special way on newly defined data types is said to be
Glorified
Encapsulated
Classified
Overloaded
A copy constructor is used to copy an object member wise to another object of the same class.
True
False
:: is known as
scope resolution operator
global operator
Both (a) & (b)
None of these