R4RIN – MCQs, Mock Tests | C/C OOPS Quiz Questions and Answers(MCQS)

Almost every C program begins with the statement

1. # include <stdio.h>
2. Print f( )
3. SCAN( )
4. Main( )

✅ Correct Answer: 1

The two operators && and || are

1. Relational operators
2. Equality operators
3. Arithmetic operators
4. Logical operators

✅ Correct Answer: 4

A variable that holds the memory address of another object is called

1. Memory variable
2. Constant
3. Pointer
4. Integer

✅ Correct Answer: 3

Enumeration is a

1. Set of legal values possible for a variable
2. List of operators
3. List of strings
4. Set of numbers

✅ Correct Answer: 1

In C, square brackets [ ] are used in

1. Statements
2. Functions
3. Arrays
4. Pointer

✅ Correct Answer: 3

Main( ) is an example of

1. Header
2. Statement
3. User defined function
4. Library function

✅ Correct Answer: 3

By default, any real number in ‘C’ is treated as

1. depends upon memory model that you are using
2. a long double
3. a double
4. a float

✅ Correct Answer: 3

Which of the following operators in ‘C’ programming language takes only integer operands?

1. +
2. *
3. /
4. %

✅ Correct Answer: 4

An identifier in C

1. can obtain both upper case and lower case
2. is made up of letters numerals and the underscore
3. is a name of thing such as variable and function
4. all of these

✅ Correct Answer: 4

Which of the following is a storage class specification in C?

1. static
2. automatic
3. external
4. all of these

✅ Correct Answer: 4

Which language makes use of object oriented approach?

1. C
2. C++
3. Java
4. C++ and Java

✅ Correct Answer: 4

Each block of a C program is referred as

1. Integer
2. Event
3. Variables
4. Function

✅ Correct Answer: 4

Whenever a C program is executed, execution starts from

1. Scanf function
2. Void function
3. Any function
4. Main function

✅ Correct Answer: 4

allows the user to use

1. One-dimensional array
2. Two-dimensional array
3. Three dimensional array
4. Multi dimensional arrays

✅ Correct Answer: 4

_ groups a number of program statements into a single unit.

1. Array
2. Structure
3. Variable
4. Function

✅ Correct Answer: 4

When one loop is constructed within another loop it is called a

1. For loop
2. Do loop
3. Do-while loop
4. Nested loop

✅ Correct Answer: 4

By pressing ___ key, the user can exit the turbo C environment.

1. Ctrl + X
2. Alt + X
3. Ctrl + A
4. Enter

✅ Correct Answer: 2

In programming, repeating some code is usually called ___

1. Looping
2. Compiling
3. Structure
4. Control structure

✅ Correct Answer: 1

The first character of the variable name

1. May be a number
2. Must be an alphabet
3. Must be an underscore
4. Must be an alphabet or underscore

✅ Correct Answer: 4

In which header file are the library functions used for I/O purpose kept?

1. stdio.h
2. math.h
3. stdio.h or math.h
4. none of these

✅ Correct Answer: 1

The method of checking the pseudo codes is called ___

1. Sequencing
2. Walk through
3. Branching
4. Iteration

✅ Correct Answer: 2

Keywords cannot be used as ____

1. Variables
2. Variables or constant names
3. Constant names
4. None of the above

✅ Correct Answer: 2

Which of the following are called white space characters?

1. The blank space
2. New line character
3. Blank space & new line character
4. None of the above

✅ Correct Answer: 3

_ are declared within the body of a function.

1. Variables
2. Local variables
3. Main functions
4. Arrays

✅ Correct Answer: 2

_ is an effective tool for programming scientific, mathematical and engineering computations.

1. Parameter
2. Main function
3. Recursion
4. Local variable

✅ Correct Answer: 3

The functions that are defined according to our requirements are called ____

1. Good functions
2. Modules
3. User defined functions
4. Library functions

✅ Correct Answer: 3

In the for loop structure, the clauses namely ___ are optional.

1. Assign and logic
2. Assign and alter
3. Logic and alter
4. Assign, logic and alter

✅ Correct Answer: 4

Subscripted variable is any type such as

1. Int
2. Float
3. Int, float or char
4. Char

✅ Correct Answer: 3

In which of the following it is convenient to group related data items as one entry?

1. Array
2. Matrix
3. Token
4. Determinant

✅ Correct Answer: 1

An unary operator! Represents

1. Unary minus
2. Logical not operator
3. Decrement operator
4. Increment operator

✅ Correct Answer: 3

An unary operator! Represents

1. Unary minus
2. Logical not operator
3. Decrement operator
4. Increment operator

✅ Correct Answer: 2

The single character input/output functions are

1. scan f ( ) and print f ( )
2. get char ( ) and print f ( )
3. scan f ( ) and put char ( )
4. get char ( ) and put char ( )

✅ Correct Answer: 4

The general form of the condition expression is

1. Expression ? expression 2 : expression 3
2. Expression 3? Expression 2: expression 1
3. Expression 2? expression 3? Expression 1
4. None of these

✅ Correct Answer: 1

The break statement is used to exit from a

1. Do loop
2. For loop
3. Switch statement
4. All of these

✅ Correct Answer: 4

Which is not necessary when using bar codes in supermarkets?

1. Price on the shelf
2. Price on the goods
3. Point-of sale (POS) terminal
4. Check digit on the bar code

✅ Correct Answer: 1

By using ____ the speed of the process can be increased.

1. Integer
2. Unsigned integer
3. Short integer
4. Long integer

✅ Correct Answer: 3

A variable is an algebraic expression that temporarily assumes the properties of a constant is called

1. Function
2. Dummy parameter
3. Parameter
4. Operator

✅ Correct Answer: 3

A function can return

1. Two values
2. No value
3. Only one value
4. Many values

✅ Correct Answer: 3

__ have no meaning outside the body of a function.

1. Variables
2. Main functions
3. Global variables
4. Local variables

✅ Correct Answer: 4

The most popular loop for array manipulation is the ___ loop.

1. for
2. while
3. do while
4. any

✅ Correct Answer: 1

Which of the following statements is correct?

1. Provides no features to manipulate composite objects
2. C provides no file access features
3. C provides no input-output features
4. All of these

✅ Correct Answer: 4

The most common use of the one dimensional array in C is

1. Function
2. Data
3. Character
4. String

✅ Correct Answer: 4

Which header file should be included if it is required to develop a function that can accept variable number of arguments?

1. Stdarg.h
2. Stdio.h
3. Stdlib.h
4. Vardar.h

✅ Correct Answer: 1

A single character input from the keyboard can be obtained by using the function

1. Scan f( )
2. Put char( )
3. Get char( )
4. Print f( )

✅ Correct Answer: 4

The operator << and >> are

1. Assignment operators
2. Bitwise logical operators
3. Logical operators
4. Relational operators

✅ Correct Answer: 2

An error in the program is called

1. A function
2. A bug
3. A variable
4. An error only

✅ Correct Answer: 2

Ready made library functions are used for

1. Output
2. Input
3. Neither input nor output
4. Input and output

✅ Correct Answer: 4

The maximum length of the variable is ___ characters.

1. 22
2. 32
3. 52
4. 62

✅ Correct Answer: 2

Which one of the following indicates the solution method?

1. Algorithm
2. Program
3. Flow chart
4. All the above

✅ Correct Answer: 4

Which of the following is an intermediate language?

1. Pseudo code
2. Basic
3. FORTRAN
4. Computer language

✅ Correct Answer: 1

Each element in a structure has a

1. Unique variable
2. Unique name
3. Name
4. Space

✅ Correct Answer: 2

For two-dimensional arrays data are usually entered

1. Array wise
2. Element wise
3. Row-wise
4. Column-wise

✅ Correct Answer: 3

The __ is a program that links the object code of the program with the library function code that is necessary for the program to run.

1. C linker
2. Compiler
3. C compiler
4. Editing

✅ Correct Answer: 1

Which of the following statement is used to skip a part of the loop?

1. Break
2. Continue
3. Both
4. None of the above

✅ Correct Answer: 2

The method in which a problem has been divided into many smaller problems is called ___

1. Problem approach
2. Top Down approach
3. New approach
4. None of these

✅ Correct Answer: 2

C contains which of the following two special pointer operators?

1. % and &
2. & and &&
3. *and &&
4. * and &

✅ Correct Answer: 4

The header file `setjmp.h’ can be used for providing

1. Character type identification and translation
2. Support for string handling functions
3. Diagnostic and debugging assistance
4. Links to assembly language for calls

✅ Correct Answer: 4

The general form of do while statements is

1. Do while expression
2. Do statement while (expression);
3. Do statement while statement
4. Do expression while statement

✅ Correct Answer: 2

A library files that come with C are

1. Program examples
2. Files that contain function which carry out various commonly used operations and calculations
3. The compiler and liner
4. Text editor for program development

✅ Correct Answer: 2

The math library is set up for the user by the file

1. Time .h
2. Math .h
3. Limits .h
4. Float .h

✅ Correct Answer: 2

Running any C program involves

1. Creating/ editing
2. Compiling and linking
3. Executing
4. All the above steps

✅ Correct Answer: 4

In do-while structure, the condition is checked at ___

1. the beginning of the loop
2. the end of the loop only
3. the centre of the loop
4. any statement of the loop

✅ Correct Answer: 2

_ is in between English and the high level computer language.

1. Mnemonic code
2. Binary code
3. Pseudo code
4. Flow chart

✅ Correct Answer: 1

The functions scan f( ) reads

1. any possible variable type
2. any possible number
3. character strings
4. a single character

✅ Correct Answer: 1

An expression

1. is a name that substitutes for a sequence of characters
2. causes the computer to carry out some action
3. is a collection of data objects and operations that can be evaluated to a single value
4. all of these

✅ Correct Answer: 3