C/C /C programming language MCQ Questions Set 4 Sample Test,Sample questions

Question:
A void pointer cannot point to which of these?

1.methods in c++

2.class member in c++

3.methods & class member in c++

4.none of the mentioned

Posted Date:-2021-02-20 22:14:35


Question:
 The if..else statement can be replaced by which operator?

1.Bitwise operator

2.Conditional operator

3.Multiplicative operator

4.Addition operator

Posted Date:-2021-02-20 22:14:35


Question:
 What we can’t do on a void pointer?

1.pointer arithmetic

2. pointer functions

3.pointer objects

4.pointer functions & objects

Posted Date:-2021-02-20 22:14:35


Question:
 Which is more effective while calling the functions?

1.call by value

2.call by reference

3.call by pointer

4.call by object

Posted Date:-2021-02-20 22:14:35


Question:
 Which of the following operator is used while declaring references?

1.*

2. &

3.^

4.->

Posted Date:-2021-02-20 22:14:35


Question:
How a reference is different from a pointer?

1.A reference cannot be null

2.A reference once established cannot be changed

3.The reference doesn’t need an explicit dereferencing mechanism

4.All of the mentioned

Posted Date:-2021-02-20 22:14:35


Question:
How many can max number of arguments present in function in the c99 compiler?

1.99

2.90

3.102

4.127

Posted Date:-2021-02-20 22:14:35


Question:
How to declare a wide character in the string literal?

1.L prefix

2. l prefix

3.W prefix

4.Z prefix

Posted Date:-2021-02-20 22:14:35


Question:
Identify the correct sentence regarding inequality between reference and pointer.

1.we can not create the array of reference

2.we can create the Array of reference

3.we can use reference to reference

4.we can use variable

Posted Date:-2021-02-20 22:14:35


Question:
Identify the incorrect statement.

1.Reference is the alternate name of the object

2.A reference value once defined can be reassigned

3.A reference value once defined cannot be reassigned

4.Reference is the alternate name of the variable

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following statement is not true about preprocessor directives?

1.These are lines read and processed by the preprocessor

2.They do not produce any code by themselves

3.These must be written on their own line

4.They end with a semicolon

Posted Date:-2021-02-20 22:14:35


Question:
Pick the correct statement about references in C++.

1.References stores the address of variables

2.References and variables both have the same address

3.References use dereferencing operator(*) to access the value of variable its referencing

4.References were also available in C

Posted Date:-2021-02-20 22:14:35


Question:
Pick the correct statement about references.

1.References can be assigned value NULL

2. References once assigned cannot be changed to refer another variable

3.Reference should not be initialized when created

4.Reference is the same as pointers

Posted Date:-2021-02-20 22:14:35


Question:
Regarding the following statement which of the statements is true?   const int a = 100;

1.Declares a variable a with 100 as its initial value

2.Declares a construction a with 100 as its initial value

3.Declares a constant a whose value will be 100

4. Constructs an integer type variable with an as identifier and 100 as the value

Posted Date:-2021-02-20 22:14:35


Question:
The data elements in the structure are also known as what?

1.objects

2.members

3.data

4. objects & data

Posted Date:-2021-02-20 22:14:35


Question:
The declaration of the structure is also called as?

1. structure creator

2.structure signifier

3.structure specifier

4.structure creator & signifier

Posted Date:-2021-02-20 22:14:35


Question:
The difference between x and ‘x’ is?

1.The first one refers to a variable whose identifier is x and the second one refers to the character constant x

2.The first one is a character constant x and the second one is the string literal x

3.Both are same

4.Both are string literal

Posted Date:-2021-02-20 22:14:35


Question:
The pointer can point to any variable that is not declared with which of these?

1.const

2.volatile

3.both const & volatile

4. static

Posted Date:-2021-02-20 22:14:35


Question:
The switch statement is also called as?

1. choosing structure

2.selective structure

3.certain structure

4.bitwise structure

Posted Date:-2021-02-20 22:14:35


Question:
The void pointer can point to which type of objects?

1. int

2.float

3.double

4.all of the mentioned

Posted Date:-2021-02-20 22:14:35


Question:
What are mandatory parts in the function declaration?

1.return type, function name

2.return type, function name, parameters

3.parameters, function name

4. parameters, variables

Posted Date:-2021-02-20 22:14:35


Question:
What are the references in C++?

1.An alternative name for already existing variables

2.A pointer to a variable

3.A new type of variables

4. A new type of constant variable

Posted Date:-2021-02-20 22:14:35


Question:
What does a reference provide?

1.Alternate name for the class

2.Alternate name for the variable

3.Alternate name for the pointer

4. Alternate name for the object

Posted Date:-2021-02-20 22:14:35


Question:
What is the difference between references and pointers?

1.References are an alias for a variable whereas pointer stores the address of a variable

2.References and pointers are similar

3.References stores address of variables whereas pointer points to variables

4.Pointers are an alias for a variable whereas references stores the address of a variable

Posted Date:-2021-02-20 22:14:35


Question:
What is the scope of the variable declared in the user defined function?

1.whole program

2.only inside the {} block

3.the main function

4.header section

Posted Date:-2021-02-20 22:14:35


Question:
What is the use of dynamic_cast operator?

1.it converts virtual base class to derived class

2.it converts the virtual base object to derived objects

3.it will convert the operator based on precedence

4.it converts the virtual base object to derived class

Posted Date:-2021-02-20 22:14:35


Question:
What is this operator called ?:?

1.conditional

2.relational

3.casting operator

4.unrelational

Posted Date:-2021-02-20 22:14:35


Question:
What will be used when terminating a structure?

1.:

2. }

3.;

4. ;;

Posted Date:-2021-02-20 22:14:35


Question:
What will happen when the structure is declared?

1.it will not allocate any memory

2. it will allocate the memory

3.it will be declared and initialized

4. it will be declared

Posted Date:-2021-02-20 22:14:35


Question:
When does the void pointer can be dereferenced?

1.when it doesn’t point to any value

2.when it cast to another type of object

3.using delete keyword

4.using shift keyword

Posted Date:-2021-02-20 22:14:35


Question:
Where does the execution of the program starts?

1. user-defined function

2.main function

3.void function

4.else function

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is a number?

1.isalpha()

2.isalnum()

3.isdigit()

4.isblank()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is a tab or space?

1.isalpha()

2.isalnum()

3. isdigit()

4.isblank()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is an alphabet?

1.isalpha()

2.isalnum()

3.isdigit()

4.isblank()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is hexadecimal?

1.isxdigit()

2.isprint()

3.iscntrl()

4. ispunct()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is printable on console?

1. isxdigit()

2.isprint()

3. iscntrl()

4. ispunct()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is punctuation mark?

1.isxdigit()

2. isprint()

3.iscntrl()

4.ispunct()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is tab or a control code?

1.isspace()

2. isalnum()

3.iscntrl()

4. isblank()

Posted Date:-2021-02-20 22:14:35


Question:
Which function is used to check whether a character is tab or space or whitespace control code(
,
,etc.)?

1. isspace()

2.isalnum()

3.iscntrl()

4.isblank()

Posted Date:-2021-02-20 22:14:35


Question:
Which looping process is best used when the number of iterations is known?

1. for

2.while

3.do-while

4.all looping processes require that the iterations be known

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following accesses a variable in structure *b?

1.b->var;

2.b.var;

3.b-var;

4.b>var;

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following function must use reference.

1.Assignment operator function

2.Copy Constructor

3.Destructor

4.Parameterized constructor

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following is a properly defined structure?

1.struct {int a;}

2.struct a_struct {int a;}

3. struct a_struct int a;

4.struct a_struct {int a;};

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following is incorrect?

1.References cannot be NULL

2.A reference must be initialized when declared

3.Once a reference is declared, it cannot be modified later to reference another object i.e. it cannot be reset

4.References cannot refer to a constant value

Posted Date:-2021-02-20 22:14:35


Question:
which of the following is used to terminate the function declaration?

1. :

2. )

3. ;

4. ]

Posted Date:-2021-02-20 22:14:35


Question:
Which of the following statement(s) is/are correct?

1.* operator is used to declare a reference

2.A reference variable defined to refer a particular variable can refer to any other variable also

3.References must always be initialized inside classes

4.A variable can have more than one references

Posted Date:-2021-02-20 22:14:35


Question:
Which operator is having the highest precedence?

1.postfix

2.unary

3.shift

4. equality

Posted Date:-2021-02-20 22:14:35


Question:
Which operator is having the right to left associativity in the following?

1.Array subscripting

2. Function call

3.Addition and subtraction

4. Type cast

Posted Date:-2021-02-20 22:14:35


Question:
Which reference modifier is used to define the reference variable?

1.&

2. $

3. #

4.@

Posted Date:-2021-02-20 22:14:35


Question:
Which value can we not assign to reference?

1.integer

2. floating

3.unsigned

4. null

Posted Date:-2021-02-20 22:14:35


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