Explore topic-wise MCQs in C++ Programming.

This section includes 72 Mcqs, each offering curated multiple-choice questions to sharpen your C++ Programming knowledge and support exam preparation. Choose a topic below to get started.

51.

The value 231.06 can be represented using which data type?

A. int
B. void
C. double
D. bool
E. None of these
Answer» D. bool
Discussion
52.

What is the value of the bool?

A. 0
B. 1
C. True
D. False
E. None of these
Answer» E. None of these
Discussion
53.

Is bool a fundamental data type in C++?

A. No, it is expanded from macros
B. No, it is an enum of {false, true}
C. No, it is a typedef of unsigned char
D. Yes
E. None of these
Answer» E. None of these
Discussion
54.

When a language has the capability to produce new data type mean, it can be called as

A. extensible
B. overloaded
C. reprehensible
D. encapsulated
E. None of these
Answer» B. overloaded
Discussion
55.

Which of the two operators ++ and -- work for the bool data type in C++?

A. --
B. ++ & --
C. ++
D. All of above
E. None of these
Answer» D. All of above
Discussion
56.

Select the right option.

A. i is false and ii is true
B. i is true but ii is false
C. both i and ii are false
D. both i and ii are true
E. None of these
Answer» E. None of these
Discussion
57.

Which of the following belongs to the set of character types?

A. only a
B. char
C. wchar_t
D. both wchar_t and char
E. None of these
Answer» E. None of these
Discussion
58.

How many characters are specified in the ASCII scheme?

A. 256
B. 64
C. 128
D. All of above
E. None of these
Answer» D. All of above
Discussion
59.

Evaluate the following

A. true
B. false
C. 0
D. 1
E. None of these
Answer» E. None of these
Discussion
60.

Is the size of character literals different in C and C++?

A. Yes, they are different
B. Implementation defined
C. No, they are not different
D. Can t say
E. None of these
Answer» B. Implementation defined
Discussion
61.

In C++, what is the sign of character data type by default?

A. Unsigned
B. Implementation dependent
C. Signed
D. All of above
E. None of these
Answer» C. Signed
Discussion
62.

How do we represent a wide character of the form wchar_t?

A. la
B. L[a].
C. l a
D. L a
E. None of these
Answer» E. None of these
Discussion
63.

Which of these expressions will return true if the input integer a is a power of two?

A. (~a & (a 1)) == 0;
B. (a | (a 1)) == 0;
C. (a & (a 1)) == 0;
D. (a | (a + 1)) == 0;
E. None of these
Answer» D. (a | (a + 1)) == 0;
Discussion
64.

Suppose in a hypothetical machine, the size of char is 32 bits. What would sizeof(char) return?

A. 1
B. Implementation dependent
C. Machine dependent
D. 4
E. None of these
Answer» B. Implementation dependent
Discussion
65.

Which of the following is not one of the sizes of the floating point types?

A. long double
B. double
C. short float
D. float
E. None of these
Answer» D. float
Discussion
66.

What will be output of this program?

A. Compilation Error
B. Runtime Error
C. 0 5
D. 5 0
E. None of these
Answer» D. 5 0
Discussion
67.

What will be output of this function?

A. Compilation Error
B. Runtime Error
C. 15
D. 10
E. None of these
Answer» D. 10
Discussion
68.

0545, 451245123245, p and 0X3f are _____ _____ ____ and _____ literals respectively.

A. hexadecimal, octal, decimal, character
B. octal, decimal, character, hexadecimal
C. octal, hexadecimal, character, decimal
D. decimal, character,octal, hexadecimal
E. None of these
Answer» C. octal, hexadecimal, character, decimal
Discussion
69.

Which of these expressions will make the rightmost set bit zero in an input integer p?

A. p = p | (p+1)
B. p = p | (p-1)
C. p = p & (p+1)
D. p = p & (p-1)
E. None of these
Answer» E. None of these
Discussion
70.

What is the value of the following 8-bit integer after all statements are executed?

A. Implementation defined
B. -1
C. 127
D. 1
E. None of these
Answer» B. -1
Discussion
71.

The size_t integer type in C++ is?

A. Unsigned integer of at least 16 bits
B. Signed integer of at least 64 bits
C. Signed integer of at least 16 bits
D. Unsigned integer of at least 64 bits
E. None of these
Answer» B. Signed integer of at least 64 bits
Discussion
72.

What constant defined in

A. SIZE_CHAR
B. CHAR_SIZE
C. CHAR_BIT
D. BIT_CHAR
E. None of these
Answer» D. BIT_CHAR
Discussion