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QUESTION: 1

C++ was developed by……………..

(A)                  Thomas Kushz

(B)                  John Kemney

(C)                  Bjarne Stroutstrup

(D)                  James Goling

Ans: C

Bjarne Stroutstrup

QUESTION: 2

 Which one of the following is a keyword?

(A)                  Size

(B)                  Key

(C)                  Jump

(D)                  Switch

 

Ans: D

Switch

QUESTION: 3

…………….Is the smallest individual unit in a program.

(A)                  Variable

(B)                  Contral

(C)                  Character

(D)                  Token

Ans: D

Token

 

QUESTION: 4

 What is a constant that contains a single character enclosed within single quotes?

(A)                  Character

(B)                  Numeric

(C)                  Fixed

(D)                  Floating point

ANS: A

Character

 

QUESTION: 5

The modulus operator uses………character.

(A)                  +

(B)                  *

(C)                  /

(D)                  %

ANS:%

 

QUESTION: 6

 

Every variable should be separate by ………..separator.

(A)        Dot

(B)        Colon

(C)        Comma

(D)        Semicolon

ANS:C

Comma

 

QUESTION: 7

 

Auto, Static, extern and register are called as……..

(A)                  Static

(B)                  Register

(C)                  Auto

(D)                  Storage specifier

ANS:D

Storage Specifier

 

QUESTION: 8

 

How  many storage specifies are there in c++

(A)        2

(B)        3

(C)        4

(D)        5

ANS: C

4

 

QUESTION: 9

 

Signed, unsigned,long and short are some of the ………….

(A)        Void

(B)        Data

(C)        Derived data

(D)        Modifiers

 

ANS:D

Modifiers

 

QUESTION: 10

 

Logical And (&&) and logical OR(||) are ………..operators

 

(A)                  Logical

(B)                  Equality

(C)                  Class member

(D)                  Comma

 

ANS: A

LOGICAL

 

QUESTION 11

 

 Which of the following user-defined header file extension used in c++?
(A)Hg
(B) Cpp
(C) H
(D) Hf

 

ANS: C

 H Explanation: .h extensions are used for user defined header files. To include a user defined header file one should use #include”name.h” i.e. enclosed within double quotes.

 

QUESTION 12

 

 Which of the following is a correct identifier in C++?
(A) VAR_1234
(B) $var_name
(C) 7VARNAME
(D) 7var_name

ANS: A

VAR_1234

 

QUESTION 13

 

What happens if the following C++ statement is compiled and executed?

INT*ptr =NULL

Delet ptr;

 

 

(A)The program is not semantically correct
(B) The program is compiled and executed successfully
(C) The program gives a compile-time error
(D) The program compiled successfully but throws an error during run-time.

 

ANS:B

 

The program is compiled and executed successfully

 

QUESTION 14

 

What will be the output of the following C++ code?

 

 

#include <iostream>

#include <string>

using namespace std;

int main(int argc, char const *argv[])

{

         char s1[6] = "Hello";

         char s2[6] = "World";

         char s3[12] = s1 + " " + s2;

         cout<<s3;

         return 0;

}

(A) Hello
(B) World
(C) Error
(D) Hello World

ANS: C

Error

 

QUESTION 15

 

 Which of the following type is provided by C++ but not C?
(A) Double
(B) Float
(C) Int
(D) Bool

ANS: D

Bool

QUESTION 16

 

 Which of the following correctly declares an array in C++?
(A) array{10};
(B) array array10];
(C) int array;
(D) int array [10];

ANS: D

int array [10];

 

QUESTION 17

 

 Which of the following is used to terminate the function declaration in C++?
(A)=;
(B=]
(C)=)
(D)=(

ANS:A

;

 

QUESTION 18

 What is meant by a polymorphism in C++?
(A) class having only single form
(B) class having four forms
(C) class having many forms
(D) class having two forms

ANS: C

Class having four forms

 

QUESTION 19

 Pick the incorrect statement about inline functions in C++?
(A) Saves overhead of a return call from a function
(B) They are generally very large and complicated function
(C) These functions are inserted/substituted at the point of call
(D) They reduce function call overheads

 

ANS:B

They are generally very large and complicated function

 

QUESTION 20

 

 Which concept allows you to reuse the written code in C++?
(A) Inheritance
(B) Polymorphism
(C) Abstraction
(D) Encapsulation

 

ANS: A

Inheritance

 

QUESTION 21

 What will be the output of the following C++ program?

 

#include<iostream>

#include<string>

Using namespace std;

Int main()

String str{sanfoundry};

 

(A) Runtime error
(B) Sanfo
(C) S
(D) Sanfoundry

ANS:A

Runtime error

 

QUESTION 22

 

 What will be the output of the following C++ code snippet?

    #include <stdio.h>

    #include<iostream>

    using namespace std;

    int main ()

    {

        int array[] = {0, 2, 4, 6, 7, 5, 3};

        int n, result = 0;

        for (n = 0; n < 8; n++)

        {

            result += array[n];

        }

        cout << result;

        return 0;

    }

a) 21
b) 27
c) 26
d) 25

Ans: D
Explanation: We are adding all the elements in the array and printing it. Total elements in the array is 7, but our for loop will go beyond 7 and add a garbage value.

QUESTION 23

 

 What will be the output of the following C++ program?

    #include <iostream>

    #include <string>

    using namespace std;

    int main ()

    {

        string str ("Sanfoundry");

        for (size_t i = 0; i < str.length();)

        {

            cout << str.at(i-1);

        }

        return 0;

    }

(A) runtime error
(B) Sanfo
 (C) S
(D ) Sanfoundry

Ans: A
Explanation: This program will terminate because the cout element is out of range.

 

QUESTION 24

 

What will be the output of the following C++ program?

#include <iostream>

using namespace std;

class A{

public:

         A(){

                 cout<<"Constructor called\n";

            }

         ~A(){

                 cout<<"Destructor called\n";

             }

};

int main(int argc, char const *argv[])

{

         A *a = new A[5];

         delete[] a;

         return 0;

}

(A) Segmentation fault
(B) “Constructor called” five times and then “Destructor called” five times
(C) “Constructor called” five times and then “Destructor called” once
(D)Error

Ans: B
“Constructor called” five times and then “Destructor called” five

 

QUESTION 25

 What does the function objects implement?
 (A)Operator
(B) Operator()
(C) Operand
(D) Operand<>

 

ANS:D

Operand<>

 

 

 

QUESTION 26

 

What are the two advantage of function objects than the function call?
(A)It contains a state
(B) It is a type
(C) It contains a state & It is a type
(D) It contains a prototype

ANS: C

It contains a state & It is a type

 

ANS:A

It contains a state

QUESTION 27

 

Which are instances of a class with member function operator() when it is defined?
(A) function objects
(B) member
(C) methods
(D) iterators

 

ANS: A

Function objects

QUESTION 28

 How many parameters does a operator() in a function object shoud take?
(a) 1
(b) 2
(c) 3
(d) 4

ANS:D

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