[MCQ] C++ Topic Wise MCQ | Topic - C++ Types | IJNO

Question : 01

What is the size of wchar_t in C++?

2

4

2 or 4

Based on the number of bits in the system

Answer: d
Explanation:
Compiler wants to make CPU as more efficient in accessing the next value.

Question : 02

Pick the odd one out.

integer, character, boolean, floating

enumeration, classes

integer, enum, void

arrays, pointer, classes

Answer: c
Explanation:
integer, character, boolean & floating consists of all fundamental types, enumeration & classes consists of user-defined types and arrays, pointer & classes consists of derived types but integer, enum & void is a mixture.

Question : 03

Pick the odd one out.

array type

character type

boolean type

integer type

Answer: a
Explanation:
Array type is not the basic type and it is constructed using the basic type.

Question : 04

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

overloaded

extensible

encapsulated

reprehensible

Answer: b
Explanation:
Extensible is used to add new features to C++.

Question : 05

Which data type is used to represent the absence of parameters?

int

short

void

float

Answer: c
Explanation:
Because void specifies an empty set of values/parameters.

Question : 06

The value 132.54 can be represented using which data type?

double

void

int

bool

Answer: a
Explanation:
The given value is with decimal points, so float or double can be used.

Question : 07

What does ‘\a’ escape code represent?

alert

backslash

tab

form feed

Answer: a
Explanation:
Because \a is used to produce a beep sound.

Question : 08

Which of the following statements are true?

int f(float)

f is a function taking an argument of type int and returning a floating point number

f is a function taking an argument of type float and returning an integer

f is a function of type float

f is a function of type int

Answer: b Explanation: The argument that is passed to a function f is of float type and the function finally returns a value that id is of integer type.

Question : 09

Which type is best suited to represent the logical values?

integer

boolean

character

float

Answer: b
Explanation:
Logical values can be either true or false, so the boolean type is suited for it.

Question : 10

Identify the user-defined types from the following?

enumeration

classes

both enumeration and classes

int

Answer: c
Explanation:
They must be defined by the users before use, unlike the other types which are readily available.