Top 50 Interview question based on C++ Programming language
1. C++ is a
______________ programming language.
a. middle-level
b. low-level
c. high-level
d. none
Ans: a.
C++ is a middle
programming language because it consists of features of both
high-level and low-level language.
2. C++ was developed
by ________________.
a. Bjarne Stroustrup
b. Mark henry.
c. Martin
d. none
Ans: a
3. C++ was developed
in _________
a. 1979
b. 1981
c. 1982
d. none
Ans: a
4. C++ is a
____________ of C.
a. subset
b. superset
c. set
d. none
Ans: b
Any legal C program
is a legal C++ program.
5. C++ consists
__________ pillars of object-oriented development:
a. Three
b. Four
c. Two
d. none
Ans: b
Four pillars are as
follows:
1encapsulation
2. data-hiding
3. inheritance
4. polymorphism.
6. The ___________
giving a rich set of methods manipulating data structures.
a. Standard template
library
b. library
c. data
d.none
Ans: a.
It contain the
detail informations about the method.
7. C++ is being
highly used to write __________.
a. device drivers
b. bus drivers
c. data drivers
d. none
Ans: a
8. _________is the
command to check whether GCC is installed on your system.
a. g++ -v
b. g-- -v
c. g+- -v
d. none
Ans: a
9. _________ have
states and behaviors.
a. functions
b. object
c. class
d. none
Ans: b
Example : Dog
State: color
Behaviors: barking
10. A _________ can
contain many methods
a. methods
b. class
c. objects
d. none
11. A ________ is
basically a behavior.
a. methods
b. data
c. class
d.none
Ans: a
12. Each _______ has
its unique set of instance variables.
a. object
b. data
c. class
d. none
Ans: a
13. How to compile a
hello.cpp ?
a. g++ hello.cpp
b. g+- hello.cpp
c. g hello.cpp
d. none
Ans: a
After running g++
hello.cpp it generates a.out file.
14. The ________ is
a statement terminator.
a. semicolon
b. colon
c. date
d. none
Ans: a
15. A ______ is a
set of logically connected statements that are surrounded by opening
and closing
braces.
a. block
b. bullock
c. code
d. none
Ans: a
16. C++ is a ______
programming language.
a. case sensitive
b.data sensitive
c. sensitive
d. none
Ans: a
man and MAN are two
different identifiers.
17. Reserved words
may not be used as ________
a. constant
b. functions
c. methods
d. none
Ans: a.
18. The trigraph
sequence always starts with ______ question marks.
a. two
b. three
c. four
d.none
Ans: a
Example: ??=
19 All the compilers
do not support __________
a. bigraph
b. tetragraph
c. trigraphs
d. none
Ans: c
Trigraphs have
confusing nature.
20. A line
containing only whitespace, possibly with a comment, is known as a
_______
a. dash line
b. blank line
c. dot line
d. none
Ans. a
21. ____________ is
the term used in c++ to describe blanks, tabs, newline characters and
comments.
a.blackspace
b. whitespace
c. space
d. none
Ans: b
22. ____________
supports single-line and multi-line comments.
a. C--
b. C++
c. D++
d. none
Ans: b
23. Variables
reserved memory locations to store __________.
a. values
b. data
c. functions
d. none
Ans: a
24. C++ have
_________ basic data types:
a. six
b. four
c. seven
d. none
Ans: c
C++ have seven basic
data types
1. Boolean
2. Character
3. Integer
4. Floating point
5. Double Floating
point.
6. Valueless (void)
7. Wide character
25.
_________________ operator is used to get size of various data types.
a. dataof
b. sizeof
c. value
d. none
Ans: b
Example:
sizeof(char)
26. _________ which
inserts a new-line character after every line.
a. sendl
b. endl
c. datal
d. none
Ans: b
27. ____________
operator is being used to pass multiple values out to the screen.
a. <<
b. <
c. >>
d. none
Ans: a
28. We can use
_______ to create a new name for an existing type.
a. typedef
b. data
c. int
d. none
Ans: a
Example: typedef int
feet;
29. ___________ is a
constant whose type is the enumeration.
a. denominator
b. numerator
c. enumerator
d. none
Ans: c
30. Creating an
enumeration requires the use of the keyword _______.
a. enum
b. ddum
c. fnum
d. none
Ans: a
Example:
enum enum-name {list
of names} var-list;
31. The name of a
________ can be composed letters, digits and the underscore
character.
a. variable
b. value
c. address
d. none
Ans: a
32.
____________stores either value true or false.
a. bool
b. pool
c. tool
d. none
Ans: a
33. A ___________
tells the compiler where and how much storage to create for the
variable.
a. function
definition
b. variable
definition
c. data
d. none
Ans: b
34. variables are
_________ and so may appear on the left-hand side of an assignment.
a. lvalues
b. rvalues
c. data
d. none
Ans: a
35. Numeric literals
are ______
a. rvalues
b. lvalues
c. data
d. none
Ans: a
36. What are the
three places where variables can be declared ?
a. local, global
variables and formal parameters.
b. data, address and
memory
c. value
d. none
Ans: a
37. ______ can be
divided into integer numerals,floating-point numerals,characters,
strings and
boolean values.
a. function
b. constants
c. values
d. none
Ans: b
constants are
treated like regular variables.
38. An __________
can be a decimal , octal or hexadecimal constant.
a. integer literal
b data literal
c. function literal
d. none
Ans: a
39. A
_______________ has an integer part, a decimal point, a fractional
part and an exponent part.
a. floating-point
literal
b. decimal literal
c. integer literal
d. none
Ans: a
40. Characters
literals are enclosed in __________ quotes
a. double
b. single
c. triple
d. none
Ans: b
41. String literals
are enclosed in ___________ quotes.
a. single
b. double
c. triple
d. none
Ans: b
42. #define
preprocessor and const keyword are two simple ways in C++ to define
_______.
a. functions
b. constants
c. data
d. none
Ans: b
Example:
const type variable
= value;
43. There are
_______ types of modifiers
a. four
b. three
c. two
d. none
Ans: a
signed , unsigned ,
long and short are four types of modifiers in C++.
44. There are
_______ types of qualifiers in C++.
a. Two
b. Three
c. Four
d. none
Ans: b
Three types of
qualifiers in C++ are as follows:
1. const
2. volatile
3. restrict
45. A ___________
defines the scope and life-time of variables within a C++ program.
a. class
b. data
c. integer
d. none
Ans: a
46. The _______
storage class is the default storage class for all local variables.
a. auto
b. zeto
c. ceto
d. none
Ans: a
auto can only be
used within functions
47. The _________
storage class is used to define local variables that should be
stored in a register.
a. register
b. memory
c. data
d. none
Ans: a
variable has a
maximum size equal to the register size.
48. The __________
storage class instructs the compiler to keep a local variable in
existence during
the lifetime of the
program.
a. static
b. ctatic
c. auto
d. none
Ans: a
static allows them
to maintain their values between function calls.
49. The
_______________ storage class is used to give a reference of a global
variable that is visible to all the program files.
a. extern
b. external
c. data
d. none
Ans: a
50. The _________
specifier applies only to class objects.
a. mutable
b. inmutable
c. data
d. none
Ans: a
mutable member can
be modified by a const member function.
Comments
Post a Comment