Fresh C++ Type Checking Interview Preparation Guide Download PDF
C++ Type Checking frequently Asked Questions by expert members with experience in C++ type checking. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts
27 C++ Type Checking Questions and Answers:
Table of Contents:
2 :: Identify the user-defined types from the following?
a) enumeration
b) classes
c) both a and b
d) int
c) both a and b
3 :: The value 132.54 can represented using which data type?
a) double
b) void
c) int
d) bool
a) double
5 :: Pick the odd one out.
a) integer, character, boolean, floating
b) enumeration, classes
c) integer, enum, void
d) arrays, pointer, classes
c) integer, enum, void
6 :: Which of the following statements are true?
int f(float)
a) f is a function taking an argument of type int and retruning a floating point number
b) f is a function taking an argument of type float and returning a integer.
c) f is a function of type float
d) none of the mentioned
b) f is a function taking an argument of type float and returning a integer.
7 :: Which datatype is used to represent the absence of parameters?
a) int
b) short
c) void
d) float
c) void
10 :: In C++, what is the sign of character data type by default?
a) Signed
b) Unsigned
c) Implementation dependent
d) None of these
c) Implementation dependent
11 :: Pick the odd one out:
a) array type
b) character type
c) boolean type
d) integer type
a) array type
12 :: What is the size of wchar_t in C++?
a) 2
b) 4
c) 2 or 4
d) based on the number of bits in the system
d) based on the number of bits in the system
15 :: Is the size of character literals different in C and C++?
a) Implementation defined
b) Can't say
c) Yes, they are different
d) No, they are not different
c) Yes, they are different
17 :: How do we represent a wide character of the form wchar_t?
a) L'a'
b) l'a'
c) L[a]
d) la
a) L'a'
19 :: Which of the following belongs to the set of character types?
a) char
b) wchar_t
c) only a
d) both a and b
d) both a and b
22 :: Tell me What is when is dynamic checking necessary?
Dynamic checking is necessary in the following scenarios:
► Whenever the definition of a variable is not necessary before its usage.
► When implicit conversion of variables into other types.
► When the program is to be compiled independently as there is no type checking at compile time.
► Whenever the definition of a variable is not necessary before its usage.
► When implicit conversion of variables into other types.
► When the program is to be compiled independently as there is no type checking at compile time.
23 :: What is dynamic type checking?
Dynamic type checking performs the type checking operation at the time of the program execution. To perform this operation, the arguments, expressions, variables must be given a data type.
24 :: What is static type checking?
Static type checking performs the type checking operation before the execution of the program. To perform this operation, the arguments, expressions, variables must be given a data type.
25 :: Explain what are associate containers?
Containers are objects that hold other objects. An associative container stores pair of values. It is typically a key-value pair. Given one value (key), we can access the other, called the mapped value. The key needs to be unique. The value associated with that key could be unique or multiple depending upon the type of associative container.
The key-value pair could be of any data type (unlike integer in case of array).
There are various types of associative containers:
Map: It is a traditional associate array, where a single value is associated with each unique pair.
Multimap : This type of associative array allows duplicate elements (value) for a given key.
The key-value pair could be of any data type (unlike integer in case of array).
There are various types of associative containers:
Map: It is a traditional associate array, where a single value is associated with each unique pair.
Multimap : This type of associative array allows duplicate elements (value) for a given key.
