C ++ Programming Test

Q: In what fields C++ can be used?

C++ can be used in developing browsers, operating systems and applications as well as in game programming, software engineering, data structures etc.

Q: What is the difference between C and C++?

C++ can be used in developing browsers, operating systems and applications as well as in game programming, software engineering, data structures etc.

Q: What are the important topics to be covered while learning C++?

While learning C++ start with C++ basics which includes comments, tokens, identifiers, structure of code then learn variables, data types, operators, functions, pointer, arrays & strings, structure & unions, object-oriented programming, encapsulation and abstraction, polymorphism, Inheritance.

Q: What are classes and objects in C++?

Objects and classes are used to wrap related functions in data in one place in C ++. Is a blueprint for the object. A class in C++ is defined using the keyboard class followed by the name of the class. To use the data and access functions defined in the class, we create objects. For example: “class TNP”.

Q: Where can I practice C++?

TNP Officer provides lots of mock tests to practice. You can find and practice a free C++ programming mock test at test.tnpofficer.com.

Free C++ Programming Mock Test: Placement

Practice the free Online C++ Programming Test to get success in future placement. This online mock test will help you in the time of final placements. Use the TNP C++ Programming Mock test to assess your competence. You’ll pick up C++ faster and have more fun doing this. So, what are waiting for just click test.tnpofficer.com and dive into the world of C++.

General Instructions:

1. Each C ++ Programming test contains 15 questions.
2. Total allotted time is 20 minutes for each test.
3. No negative marking.
4. Try to finish it on time.
5. The Test will be submitted automatically if the time expired.
6. Don’t refresh the page.

C ++ Programming Test 3

1 / 15

Which of the following operator is overloaded for object cout ?

A) >>

B) +

C) <<

D) *

2 / 15

Which of the following approach is adapted by C++?

A) Top-down

B) Right-left

C) Left-right

D) Bottom-up

3 / 15

Which of the following statements are correct?

A) Destructor is always called explicitly.

B) Constructor and destructor functions are not called at all as they are always inline.

C) Constructor is always called explicitly.

D) Constructor is called either implicitly or explicitly, whereas destructor is always called implicitly.

4 / 15

What are the values of a and b?

int a = false

bool b = 99

A) 0, false

B) 1, true

C) 0, true

D) 1, false

5 / 15

Which of the following statements is correct?

1. Once the variable and the reference are linked they are tied together.

2. Once the reference of a variable is declared another reference of that variable is not allowed.

A) Both 1 and 2 are incorrect.

B) Only 1 is correct.

C) Only 2 is correct.

D) Both 1 and 2 are correct.

6 / 15

Which of the following statements is correct in C++?

A) Classes cannot have data as protected members

B) Structures can have functions as members

C) Structure members are private by default.

D) Class members are public by default.

7 / 15

Which of the following statement is correct?

A) Overloaded functions can accept only same number and same type of arguments.

B) Overloaded functions can accept same number of arguments.

C) Overloaded functions can accept only different number and different type of arguments.

D) Overloaded functions always return value of same data type.

8 / 15

Which of the following statement is correct about the program given below?

#include

int main()

{

int x = 80;

int y& = x;

x++;

cout << x << " " << --y; return 0;

}

A) The program will print the output 81 80.

B) The program will print the output 80 80.

C) It will result in a compile time error.

D) The program will print the output 81 81.

9 / 15

What are the things that are inherited from the base class?

A) Friend functions

B) Constructor and its destructor

C) All of the above mentioned

D) Operators & members

10 / 15

What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero-argument constructor?

A) Compile-time error

B) Runtime exception

C) Preprocessing error

D) Runtime error

11 / 15

A __________ is a special method used to initialize the instance variable of a class.

A) constructor

B) destructor

C) member function

D) structure

12 / 15

What features make C++ so powerful?

A) All the above

B) Easy memory management

C) Code reusability

D) Easy implementation

13 / 15

Which of the following statement is correct about the references?

A) A reference must always be initialized within functions.

B) A reference must always be initialized.

C) A reference must always be initialized outside all functions.

D) Both A and C.

14 / 15

Which of the following literal integer constants are hexadecimal?

A) 024

B) hex01100100

C) 01100100

D) 0x1a

15 / 15

What is correct about the following program?

#include 
class Base
{
int x, y, z;
public:
Base()
{
x = y = z = 0;
}
Base(int xx, int yy = 'A', int zz = 'B')
{
x = xx;
y = x + yy;
z = x + y;
}
void Display(void)
{
cout<< x << " " << y << " " << z << endl;
}
};
class Derived : public Base
{
 int x, y;
 public:
Derived(int xx = 65, int yy = 66) : Base(xx, yy)
{
y = xx;
x = yy;
}
 void Display(void)
{
cout<< x << " " << y << " ";
Display();
}
};
int main()
{
Derived objD;
objD.Display();
return 0;
}

A) The program will report compilation error.

B) The program will run successfully giving the output 65 66.

C) The program will run successfully giving the output 66 65.

D) The program will run successfully giving the output 66 65 65 131 196.

E) The program will produce the output 66 65 infinite number of times (or till stack memory overflow).

Your score is

The average score is 42%

C ++ Programming Test 4

1 / 15

Which of the following statement is correct?

A) The default value for an argument cannot be function call.

B) C++ does not allow the redefinition of a default parameter.

C) Both A and B.

D) C++ allows the redefinition of a default parameter.

2 / 15

Which of the following statements is correct?

A) Pointer to derived class cannot be created.

B) Pointer to base class cannot be created.

C) Base class pointer cannot point to derived class.

D) Derived class pointer cannot point to base class.

3 / 15

Which of the following factors supports the statement that reusability is a desirable feature of a language?

A) Both A and B

B) It lowers the maintenance cost.

C) It reduces the compilation time

D) It decreases the testing time

4 / 15

Which of the following is user defined data type?

A) public

B) class

C) private

D) both A and B

5 / 15

Which of the following is a mechanism of static polymorphism?

A) Templates

B) Operator overloading

C) All of the above

D) Function overloading

6 / 15

What happens if the base and derived class contains definition of a function with same prototype?

A) Only derived class function will get called irrespective of object.

B) Base class object will call base class function and derived class object will call derived class function.

C) Compiler reports an error on compilation.

D) Only base class function will get called irrespective of object.

7 / 15

What is the output of this program?

#include #include using namespace std; int main() { complex i(2, 3); i = i * 6 / 3; cout << i; return 0; }

A) (6, 12)

B) (4, 6)

C) None of the above

D) (2, 3)

8 / 15

It is a __________ error to pass arguments to a destructor.

A) logical

B) syntax

C) linker

D) virtual

9 / 15

What will be the output of the following program?

#include

class BixBase

{

public:

BixBae()

{

cout<< "Base OK. ";

}

~BixBase()

{

cout<< "Base DEL. ";

}

};

class BixDerived: public BixBase

{

public:

BixDerived()

{ cout<< "Derived OK. ";

}

~BixDerived()

{

cout<< "Derived DEL. ";

}

};

int main()

{

BixBase *basePtr = new BixDerived();

delete basePtr;

return 0;

A) Base OK. Derived OK. Base DEL.

B) Base OK. Derived OK. Derived DEL.

C) Base OK. Derived OK. Derived DEL. Base DEL.

D) Base OK. Derived OK.

10 / 15

Which rule will not affect the friend function?

A) None of the above

B) both a & b

C) private and protected member can be accessed anywhere

D) private and protected members of a class cannot be accessed from outside

11 / 15

Which of the following statement is correct?

A) An array of references is acceptable

B) Reference is like a structure

C) Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.

D) An array of references is not acceptable

12 / 15

Which of the following statements is correct?

A) Data items in a class must be private.

B) Member functions of a class must be private.

C) Both data and functions can be either private or public.

D) Constructor of a class cannot be private.

13 / 15

Which of the following statement will be correct if the function has three arguments passed to it?

A) The trailing argument will be the default argument

B) The first argument will be the default argument

C) All the argument will be the default argument

D) The middle argument will be the default argument

14 / 15

Which concept uses the preincrement?

A) queue

B) call by reference

C) call by value

D) call by function

15 / 15

What is the output of this program?

#include

using namespace std;

int main ()

{

string str (“steve jobs is legend”);

string::iterator it;

str.erase (str.begin()+ 5, str.end()-7);

cout << str << endl;

return 0;

}

A) legend

B) steve legend

C) steve

D) jobs is

Your score is

The average score is 37%

C ++ Programming Test 5

1 / 15

What is the output of this program?

#include #include using namespace std; int main() { complex i(2, 3); i = i * 6 / 3; cout << i; return 0; }

A) (6, 12)

B) (2, 3)

C) (4, 6)

D) None of the above

2 / 15

Which of the following is not a type of constructor?

A) Default constructor

B) Friend constructor

C) Parameterized constructor

D) Copy constructor

3 / 15

It is a __________ error to pass arguments to a destructor.

A) virtual

B) logical

C) linker

D) syntax

4 / 15

Everything defined at the program scope level (ie. outside functions and classes) is said to be ……………

A) local scope

B) global scope

C) regional scope

D) static scope

5 / 15

Which of the following also known as an instance of a class?

A) Object

B) Member Functions

C) Member Variables

D) Friend Functions

6 / 15

Which of the following gets called when an object is being created?

A) main

B) constructor

C) virtual function

D) destructor

7 / 15

When are the Global objects destroyed?

A) When the control comes out of the block in which they are being used.

B) When the control comes out of the function in which they are being used.

C) As soon as local objects die.

D) When the program terminates.

8 / 15

Destructor has the same name as the constructor and it is preceded by ______ .

A) ?

B) $

C) !

D) ~

9 / 15

Which of the following gets called when an object goes out of scope?

A) main

B) constructor

C) destructor

D) virtual function

10 / 15

Which of the following statement is correct?

A) Overloaded functions can have at most one default argument.

B) An overloaded function cannot have default argument.

C) All arguments of an overloaded function can be default.

D) A function if overloaded more than once cannot have default argument.

11 / 15

Which of the following statement is correct about destructors?

A) A destructor has void return type.

B) A destructors return type is always same as that of main().

C) A destructor has no return type.

D) A destructor has integer return type.

12 / 15

Which of the following operator can’t be overloaded?

A) []

B) +

C) ::

D) -

13 / 15

cout is a/an __________ .?

A) function

B) macro

C) object

D) operator

14 / 15

What does the dereference operator will return?

A) none of the above

B) rvalue equivalent to the value at the pointer address

C) lvalue equivalent to the value at the pointer address.

D) it will return nothing

15 / 15

Can a class have virtual destructor?

A) No

B) Yes

Your score is

The average score is 50%

C++ Test Description

This exam assesses your level of competency in C++ programming, emphasizing grammar, problem-solving techniques, and fundamental language ideas. Important topics including data types, functions, classes, inheritance, polymorphism, control structures, and standard library usage will be covered in your test. The purpose of the questions is to evaluate your proficiency in object-oriented concepts, debugging and optimizing existing code, and writing reliable and efficient C++ code. This test is appropriate for applicants who have a basic understanding of C++ and is designed to determine your level of preparedness for practical software development jobs.

Expertise your following skills through mock test

Functions
Classes
Inheritance
Polymorphism
Data types
Variables

In what fields C++ can be used?

C++ can be used in developing browsers, operating systems and applications as well as in game programming, software engineering, data structures etc.

What is the difference between C and C++?

C++ can be used in developing browsers, operating systems and applications as well as in game programming, software engineering, data structures etc.

What are the important topics to be covered while learning C++?

While learning C++ start with C++ basics which includes comments, tokens, identifiers, structure of code then learn variables, data types, operators, functions, pointer, arrays & strings, structure & unions, object-oriented programming, encapsulation and abstraction, polymorphism, Inheritance.

What are classes and objects in C++?

Objects and classes are used to wrap related functions in data in one place in C ++. Is a blueprint for the object. A class in C++ is defined using the keyboard class followed by the name of the class. To use the data and access functions defined in the class, we create objects. For example: “class TNP”.

Where can I practice C++?

TNP Officer provides lots of mock tests to practice. You can find and practice a free C++ programming mock test at test.tnpofficer.com.

Free C++ Programming Mock Test: Placement

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