CuriousTab
Search
CuriousTab
Home
Aptitude
Computer
C Programming
C# Programming
C++ Programming
Database
Java Programming
Networking
Engineering
Biochemical Engineering
Biochemistry
Biotechnology
Chemical Engineering
Civil Engineering
Computer Science
Digital Electronics
Electrical Engineering
Electronics
Electronics and Communication Engineering
Mechanical Engineering
Microbiology
Technical Drawing
GK
Current Affairs
General Knowledge
Reasoning
Data Interpretation
Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning
Exams
AIEEE
Bank Exams
CAT
GATE
IIT JEE
TOEFL
Jobs
Analyst
Bank PO
Database Administrator
IT Trainer
Network Engineer
Project Manager
Software Architect
Datatypes problems
1. Which of the following statements are correct?
We can assign values of any type to variables of type object.
When a variable of a value type is converted to object, it is said to be unboxed.
When a variable of type object is converted to a value type, it is said to be boxed.
Boolean variable cannot have a value of
null
.
When a value type is boxed, an entirely new object must be allocated and constructed.
Options
A. 2, 5
B. 1, 5
C. 3, 4
D. 2, 3
Show Answer
Scratch Pad
Discuss
Correct Answer: 1, 5
2. Which of the following is an 8-byte Integer?
Options
A.
Char
B.
Long
C.
Short
D.
Byte
E.
Integer
Show Answer
Scratch Pad
Discuss
Correct Answer:
Long
3. Which of the following statements are correct about data types?
Each value type has an implicit default constructor that initializes the default value of that type.
It is possible for a value type to contain the
null
value.
All value types are derived implicitly from
System.ValueType
class.
It is not essential that local variables in C# must be initialized before being used.
Variables of reference types referred to as objects and store references to the actual data.
Options
A. 1, 3, 5
B. 2, 4
C. 3, 5
D. 2, 3, 4
Show Answer
Scratch Pad
Discuss
Correct Answer: 1, 3, 5
4. Which of the following does not store a sign?
Options
A.
Short
B.
Integer
C.
Long
D.
Byte
E.
Single
Show Answer
Scratch Pad
Discuss
Correct Answer:
Byte
5. Which of the following statement correctly assigns a value
33
to a variable
c
?
byte a = 11, b = 22, c;
Options
A.
c = (byte) (a + b);
B.
c = (byte) a + (byte) b;
C.
c = (int) a + (int) b;
D.
c = (int)(a + b);
E.
c = a + b;
Show Answer
Scratch Pad
Discuss
Correct Answer:
c = (byte) (a + b);
6. Which of the following is the correct size of a
Decimal
datatype?
Options
A. 8 Bytes
B. 4 Bytes
C. 10 Bytes
D. 16 Bytes
E. None of the above.
Show Answer
Scratch Pad
Discuss
Correct Answer: 16 Bytes
7. Which of the following statements are correct about datatypes in C#.NET?
Every datatype is either a value type or a reference type.
Value types are always created on the heap.
Reference types are always created on the stack.
Mapping of every value type to a type in Common Type System facilitates Interoperability in C#.NET.
Every reference type gets mapped to a type in Common Type System.
Options
A. 1, 3
B. 2, 5
C. 1, 4
D. 3, 4
Show Answer
Scratch Pad
Discuss
Correct Answer: 1, 4
First
2
More in C# Programming:
Arrays
Attributes
Classes and Objects
Collection Classes
Constructors
Control Instructions
Datatypes
Delegates
Enumerations
Exception Handling
Functions and Subroutines
Generics
Inheritance
Interfaces
Namespaces
.NET Framework
Operators
Polymorphism
Properties
Strings
Structures