Explore topic-wise MCQs in Matlab.

This section includes 301 Mcqs, each offering curated multiple-choice questions to sharpen your Matlab knowledge and support exam preparation. Choose a topic below to get started.

151.

A ‐‐‐‐‐‐‐‐ is a physical device that exists at run time.

A. node
B. package
C. both a and b
D. none of these
Answer» B. package
Discussion
152.

To increase the value of c by one which of the following statement is wrong?

A. c++;
B. c = c + 1;
C. c + 1 => c;
D. c += 1
Answer» D. c += 1
Discussion
153.

The operator ‘<< ‘is called

A. Get from operator
B. Put to operator
C. Extraction operator
D. None of these
Answer» C. Extraction operator
Discussion
154.

There is a unique function in C++ program by where all C++ programs start their execution

A. start()
B. begin()
C. main()
D. output()
Answer» D. output()
Discussion
155.

In an assignment statement a=b Which of the following statement is true?

A. The variable a and the variable b are equal.
B. The value of b is assigned to variable a but the later changes on variable b will not affect the value of variable a
C. The value of b is assigned to variable a and the later changes on variable b will affect the value of variable a
D. The value of variable a is assigned to variable b and the value of variable b is assigned to variable a.
Answer» C. The value of b is assigned to variable a and the later changes on variable b will affect the value of variable a
Discussion
156.

The operator we cannot use friend function

A. ?
B. Sizeof
C. ::
D. []
Answer» E.
Discussion
157.

The binding of data and functions together into a single class‐type is referred to as ‐‐‐‐‐‐‐‐

A. Abstraction
B. Encapsulation
C. Inheritance
D. Polymorphism
Answer» C. Inheritance
Discussion
158.

Calling a member function by using its name from another member function of the same class isknown as ‐‐‐‐‐‐

A. Grouping of member function
B. Member function group
C. Nesting of member function
D. Nested group of member function
Answer» D. Nested group of member function
Discussion
159.

Which of the following is a UML relationship.

A. dependency
B. association
C. generalization
D. all of the above
Answer» E.
Discussion
160.

The memory management operator in c++

A. new &delete
B. malloc
C. calloc
D. free
Answer» B. malloc
Discussion
161.

Blanks, tabs, newlines, form feeds and comments are collectively called ‐‐‐‐‐‐‐

A. Blank fields
B. White space
C. Null values
D. Literals
Answer» C. Null values
Discussion
162.

Objects communicate with one another by using ‐‐‐‐‐‐‐‐‐‐.

A. message passing
B. operator overloading
C. inheritance
D. both a & b
Answer» B. operator overloading
Discussion
163.

Identify the valid integer from the following:

A. 325.6
B. 255 356UL
C. ‐3658 9586L
D. +324454ul
Answer» E.
Discussion
164.

The operators can’t be overloaded

A. Binary operators
B. Unary operators
C. Ternary operator
D. None
Answer» D. None
Discussion
165.

In UML ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is a collection of things tied together through relationships.

A. things
B. relationships
C. diagrams
D. none of these
Answer» D. none of these
Discussion
166.

Write the range of value of the data type ‘char’

A. 0 to 128
B. 0 to 255
C. ‐255 to 255
D. ‐128 to 127
Answer» E.
Discussion
167.

Through ‐‐‐‐‐‐‐‐ we can eliminate redundant code and extend the use of existing class.

A. inheritance
B. operator overloading
C. encapsulation
D. both a & b
Answer» B. operator overloading
Discussion
168.

‐‐‐‐‐‐ are the smallest or the atomic elements of a language.

A. Identifiers
B. Literals
C. Keywords
D. Tokens
Answer» E.
Discussion
169.

A block comment can be written by

A. Starting every line with double slashes (//)
B. Starting with /* and ending with */
C. Starting with //* and ending with *//
D. Starting with <!‐ and ending with ‐!>
Answer» C. Starting with //* and ending with *//
Discussion
170.

The main function having argument

A. Default Argument
B. Command line argument
C. Const argument
D. Constructor overloading
Answer» C. Const argument
Discussion
171.

Variables inside parenthesis of functions declarations have _____ level access.

A. Local
B. Global
C. Module
D. Universal
Answer» B. Global
Discussion
172.

The arrays of variable that are of the type class

A. Array of object
B. pointer
C. Object
D. Structure
Answer» B. pointer
Discussion
173.

We declare a function with ______ if it does not have any return type

A. long
B. double
C. void
D. int
Answer» D. int
Discussion
174.

Which one is the Object Oriented Programming language?

A. Cobol
B. C
C. C++
D. both C & C++
Answer» D. both C & C++
Discussion
175.

Which of the following is the only technical difference between structures and classes inC++?

A. Member function and data are by default protected in structures but private in classes.
B. Member function and data are by default private in structures but public in classes.
C. Member function and data are by default public in structures but private in classes.
D. Member function and data are by default public in structures but protected in classes.
Answer» D. Member function and data are by default public in structures but protected in classes.
Discussion
176.

‐‐‐‐‐‐‐ can represent items of varying data types to an item.

A. Class
B. Array
C. Structures
D. Object
Answer» D. Object
Discussion
177.

How many times a constructor is called in the life‐time of an object?

A. Only once
B. Twice
C. Thrice
D. Depends on the way of creation of object
Answer» B. Twice
Discussion
178.

‐‐‐‐‐‐‐ are used for comparing two conditions or to write a compound condition.

A. Relational operators
B. Ternary operator
C. Conditional operator
D. Logical operator
Answer» E.
Discussion
179.

The function used to receive one character at a time

A. get()
B. put()
C. getline()
D. write()
Answer» B. put()
Discussion
180.

Which of the following is not a valid relational operator?

A. 0
B. 0
C. >=
D. >=
Answer» C. >=
Discussion
181.

The visibility of variables inside a structure is

A. Private
B. Public
C. Protected
D. None of these
Answer» C. Protected
Discussion
182.

The pointer refers to an object that has called the member function currently

A. this
B. address
C. virtual function
D. none
Answer» B. address
Discussion
183.

In object oriented Programming the program is divided into ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

A. class
B. object
C. function
D. none of these
Answer» C. function
Discussion
184.

The function contain in the ios class to set flags

A. width()
B. precision()
C. fill()
D. setf()
Answer» E.
Discussion
185.

The process by which objects of one class acquire the properties of objects of another class is called ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ .

A. abstraction
B. inheritance
C. encapsulation
D. polymorphism
Answer» C. encapsulation
Discussion
186.

‐‐‐‐‐ is a function that is expanded in line when it is invoked.

A. Library function
B. User defined function
C. Inline function
D. None of these
Answer» D. None of these
Discussion
187.

‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ are conceptual things which exists only during the development process.

A. Package
B. node
C. class
D. none of the above
Answer» B. node
Discussion
188.

What is the difference between struct and class in C++?

A. All members of a structure are public and structures don’t have constructors and destructors
B. Members of a class are private by default and members of struct are public by default. When deriving a struct from a class/struct, default access-specifier for a base class/struct is public and when deriving a class, default access specifier is private.
C. All members of a structure are public and structures don’t have virtual functions
D. All of the above
Answer» C. All members of a structure are public and structures don’t have virtual functions
Discussion
189.

Output of the program?#includeusing namespace std;int fun(int x = 0, int y = 0, int z){ return (x + y + z); }int main(){ cout << fun(10);return 0;}

A. 10
B. 0
C. 20
D. Compiler Error
Answer» E.
Discussion
190.

Is it fine to call delete twice for a pointer?#includeusing namespace std;int main(){ int *ptr = new int; delete ptr; delete ptr; return 0;}

A. Yes
B. No
C. none
D. all
Answer» C. none
Discussion
191.

How can we restrict dynamic allocation of objects of a class using new?

A. By overloading new operator
B. By making an empty private new operator.
C. By making an empty private new and new[] operators
D. By overloading new operator and new[] operators
Answer» D. By overloading new operator and new[] operators
Discussion
192.

Default values for a function are specified when ____.

A. Function is defined
B. Function is declared
C. Both a and b
D. None of these
Answer» C. Both a and b
Discussion
193.

Choose the operator which cannot be overloaded.

A. /
B. ( )
C. ::
D. %
Answer» D. %
Discussion
194.

Which of the followings is/are pointer-to-member declarator?

A. ->*
B. .*
C. ::*
D. both A and B
Answer» D. both A and B
Discussion
195.

Which of the following operator functions cannot be global?

A. new
B. delete
C. Conversion Operator
D. All of the above
Answer» D. All of the above
Discussion
196.

Which of the following operators are overloaded by default by the compiler in every user defined classes even if user has not written? 1) Comparison Operator (==) 2) Assignment Operator (=)

A. Both 1 and 2
B. Only 1
C. Only 2
D. None of the two
Answer» D. None of the two
Discussion
197.

When a copy constructor may be called?

A. When an object of the class is returned by value.
B. When an object of the class is passed (to a function) by value as an argument.
C. When an object is constructed based on another object of the same class
D. All of the above
Answer» E.
Discussion
198.

Which of the followings is/are automatically added to every class, if we do not write ourown?

A. Copy Constructor
B. Assignment Operator
C. A constructor without any parameter
D. All of the above
Answer» E.
Discussion
199.

What operation can be performed by destructor?

A. Abort the program
B. Resource cleanup
C. Exit from the current block
D. None of the mentioned
Answer» C. Exit from the current block
Discussion
200.

class Test { int x;};int main() { Test t; cout << t.x;return 0;}

A. 0
B. Garbage Value
C. Compiler Error
D. None
Answer» D. None
Discussion