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C language Online Test

p++ executes faster than p+1 because

1. p++ is a single instruc tion

2. None of these

3. p uses registers

4. ++ is faster than +

Operators have hierarchy. It is useful to know which operator

1. operates on large numbers

2. is most important

3. is used first

4. is faster

The equality operator is represented by

1. .EQ.

2. :=

3. ==

4. =

Which operator in C is called a ternary operator

1. ?:

2. ()

3. if..then

4. ++

Which of the following is a key word is used for a storage class

1. scanf

2. external

3. printf

4. auto

Symbolic constants can be defined using

1. const

2. symbols

3. None of these

4. # define

Array subscripts in C always start at

1. -1

2. Value provided by user

3. 1

4. 0

Which is more appropriate for reading in a multi -word string?

1. gets( )

2. Printf( )

3. puts ( ).

4. scanf( )

Maximum number of elements in the array declaration int a[5][8] is

1. 35

2. 32

3. 40

4. 28

C is a ________ level programming language?

1. Low

2. High

3. None of these.

4. Middle

The operat or && is an example for ___ operator.

1. Logical

2. Assignment

3. Rational

4. Increment

What should be the expression return value for a do -while to terminate

1. NULL

2. 1

3. 0

4. -1

In C, a Union is

1. None of these

2. memory screen

3. memory store

4. memory location

A statement differs from expression by terminating with a

1. ;

2. :

3. NULL

4. .

A type cast is used to

1. Define a new data type

2. Rename an old type

3. None of these.

4. Force a value to be a particular variable type

A multidimensional array can be expressed in terms of

1. array of pointers rather than as pointers to a group of contig uous array

2. None of these

3. array without the group of contiguous array

4. data type arrays

What is the control character for "a floating point number".

1. %d

2. %c

3. %f

4. %i

String constants should be enclosed between ___

1. None of these

2. Both a and b

3. Single quotes

4. Double quo tes

Which escape character can be used to begin a new line in C?

1. \a

2. \b

3. \m

4. \n

Identify the wrong statement

1. putchar('x')

2. putchar(65)

3. putchar(' \n')

4. putchar("x")

Which of the following are tokens in C?

1. Variables

2. Keywords

3. All of the above

4. Constants

The _______ is used to break out of the case statements.

1. break

2. continue

3. case

4. default

Character constants should be enclosed between ___

1. Single quotes

2. Both a and

3.D) None of these

4. Double quotes

Operator precedence determines which operator

1. Is most important

2. None of these.

3. Operators on the largest number

4. Is used first

The operator + in a+=4 means

1. a=4+4

2. a+4=a

3. a=a+4

4. a=4

Which of the following header file is required for strcp y() function?

1. files.h

2. string.h

3. strings.h

4. strcsspy()

Consider the foll statement: "using C language programmers can write their own library functions".

1. None of th ese.

2. True

3. False

4. May be

Which of the following is invalid?

1. ‘’

2. ““

3. ‘a’

4. ‘abc’

Which operator has the lowest priority?

1. ||

2. %

3. +

4. ++

Which among the following is a unconditional control structure

1. do-while

2. goto

3. for

4. if-else

What will be the maximum size of a double variable?

1. 8 bytes

2. 16 bytes

3. 1 byte

4. 4 bytes

The _______ chars have values from -128 to

1. signed

2. none

3. unsigned

4. long

The conversion characters for data input means that the data item is

1. A short integer

2. A string followed by white space

3. An unsigned decimal integer

4. A hexadecimal integer

Integer Division results in

1. An Error is generated

2. Truncating the fractional part

3. Floating value

4. Rounding the fractional part

The continue command cannot be used with

1. for

2. switch

3. do

4. while

A Structure

1. can be displayed as a single entity

2. can be read as a single entity

3. has member variables that cannot be read individually

4. cannot be read as a single entity

C is a ___ language

1. Low Level

2. Middle Level

3. High Level

4. Machine Level

Which of the following is a Scalar Data type

1. Pointer

2. Array

3. Float

4. Union

Function argument can be

1. A structure member

2. A pointer variable

3. All of the above.

4. A complete structure

In the C language 'a’ represents

1. a character

2. a digit

3. an integer

4. a word

Operators have precedence. Precedence determines which operator is

1. evaluated first

2. takes no arguments

3. takes less memory

4. faster

Which of the following statements is true?

1. Both (a) and (c)

2. C Library functions provide I/O facilities

3. C inherent I/O facilities

4. C doesn’t have I/O facilities

Which of the following operator has the highest precedence?

1.*

2. =>

3. ==

4. +

What is the control character for "a decimal integer".

1. %d

2. %i

3. %c

4. %p

The printf() function retunes which value when an error occurs?

1. Zero

2. Positive value

3. None of these

4. Negative value

The output of printf("%u", -1) is

1. Error message

2. maxium int value

3. minimum int value

4. -1

Which function is necessary to exist in each & every program?

1. sum

2. main

3. None of these.

4. void

What is used as a terminator in C?

1. :

2. ?

3. ;

4. _

An Ampersand before the name of a variable denotes

1. Variable Name

2. Address

3. Data Type

4. Actual Value

File manipulation functions in C are available in which header file?

1. stdio.h

2. files.h

3. stdlib.h

4. streams.h

The associativity of ! operator is

1. Right to Left

2. (a) for Relational and (b) for Arithmetic

3. (a) for Arithmetic and (b) for Relational

4. Left to Right

Which is the correct way to declare a pointer?

1. int *ptr;

2. int_ptr;

3. None of these.

4. *int ptr;

C supports how many basic looping constructs

1. 2

2. 4

3. 6

4. 3

Which of the following is a ternary operator?

1. *

2. sizeof

3. ^

4. ?:

If you don’t initialize a static array, what will be the element set to?

1. An undetermined value

2. Zero

3. A floating point

4. None of these.

If you want to exchange two rows in a two dimensional array, the fastest way is to:

1. Exchange the address of each element in the two row

2. Silence the address of the rows in an array of pointer and exchange the pointer

3. Exchange the elements of the 2rows

4. None of these.

C supports the ______ statement to branch unc onditionally from one point to another in the program.

1. for

2. goto

3. continue

4. break

Which header file is essential for using strcmp() function?

1. strings.h

2. text.h

3. strcmp.h

4. string.h

Pointers are of

1. character data type

2. None of these

3. integer data type

4. unsigned integer data types

An expression contains relational, a ssign. ment and arithmetic operators. If

1. Arithmetic, relational, assignment

2. Relational, arithmetic, assignment

3. Assignment, arithmetic, relational

4. Assignment, relational, arithmetic

5.renthesis are not present, the order will be

Which of the following is charecter oriented console I/O function?

1. scanf() and printf()

2. fgets() and fputs()

3. getchar() and putchar()

4. gets() and puts()

A compound statement is a group of statements included between a pair of

1. double quote

2. a pair of /’s

3. curly braces

4. parenthesis

Which of the following is an example of compounded assignment statement?

1. a+=5

2. a=5

3. a=b

4. a=b=c

malloc() function used in dynamic allocation is available in which header file?

1. conio.h

2. stdlib.h

3. mem.h

4. stdio.h

If the size of the array is less than the number of initializers then,

1. Size of Array i s increased

2. Extra values are being ignored

3. Size is neglected when values are given

4. Generates an error message

A “switch” statement is used to:

1. None of these.

2. Switch between user defined functions in a program

3. Jump from one place to another in a program.

4. Switch from one variable to another variable

What will be the output of the expression 11 ^ 5?

1. 5

2. 6

3. None of these

4. 11

What is the control character for "a single character".

1. %c

2. %p

3. %i

4. %d

Which pair of functions below are used for single character I/O.

1. None of these

2. Scanf() and printf()

3. Getchar() and putchar()

4. Input() and output()

Explicit type conversion is known as

1. Disjunction

2. Casting

3. Conversion

4. Separation

C allows arrays of greater than two dimensions, who will determined this

1. parameter

2. compiler

3. None of these

4. programmer

The operator / can be applied to

1. double values

2. float values

3. integer values

4. All of these

The process of translating a source program into machine language is a function

1. None of these.

2.:

3. Compiler

4. Assembler

5. Translator

When the main function is called, it is called with the arguments

1. argv

2. argc

3. None of these

4. both a & b

The maximum length of a variable in C is ___

1. 16

2. 32

3. 64

4. 8

The type cast operator is

1. (type)

2. // " "

3. cast()

4. (;;)

Null character is represented by

1. \n

2. \0

3. \e

4. \o

The number of the relational operator s in the C language is

1. Six

2. Three

3. Four

4. One

C programming language was developed by

1. Bill Gates

2. Dennis Ritchie

3. Peter Norton

4. Ken Thompson

A declaration float a,b; occupies ___ of memory

1. 8 bytes

2. 16 bytes

3. 4 bytes

4. 1 byte

The operator & is used for

1. Bitwise AND

2. Bitwise OR

3. Logical OR

4. Logical AND

A Link is

1. a C interpreter

2. a compiler

3. an active debugger

4. a analyzing tool in C

Which operator has the highest priority?

1. ||

2. %

3. ++

4. +

Which of the following symbol is used to denote a pre -processor statement?

1. ;

2. ~

3. #

4. !

The bitwise OR operator is used to

1. divide numbers

2. set the desired bits to 0

3. set the desired bits to 1

4. multiply numbers

What will be the maximum size of a float varia ble?

1. 2 bytes

2. 4 bytes

3. 1 byte

4. 8 bytes

What is the valid range of numbers for int type of data?

1. No specific range

2. -65536 to +65536

3. -32768 to +32767

4. 0 to 256

A pointer to a pointer in a form of

1. a chain of pointers

2. multiple indirection

3. None of these

4. both a and b

C was developed in the year ___

1. 1980

2. 1970

3. 1972

4. 1976

What is the answer o f: 7%3

1. 2

2. 1

3. 3

4. 5

Which escape character can be used to beep from speaker in C?

1. \n

2. \b

3. \m

4. \a

Which of the following language is predecessor to C Programming Language?

1. A

2. C++

3. BCPL

4. B

Rate this question:

A function is a subroutine that may include one or more ____________ designed to perform a specific task.

1. Libraries

2. Statements

3. Data types.

4. Functions

Continue statement is used

1. exit and return to the main function

2. to go to the next iteration in a loop

3. restarts iterations from beginning of loop

4. come out of a l oop

Header files in C contain

1. Header information of C programs

2. Compiler commands

3. Operators for files

4. Library functions

The bitwise AND operator is used for

1. Masking

2. Division

3. Shifting bits

4. Comparison

Which symbol is used as a statement terminator in C?

1. ;

2. !

3. ~

4. #

C language is available for which of the following Operating Systems?

1. DOS

2. Unix

3. Windows

4. All of these

The size of a String variable is

1. 8 bytes

2. 16 bytes

3. 1 byte

4. None of these

The meaning of conversion character for data input is

1. None of th e above

2. Data item is a short integer

3. Data item is an unsigned decimal integer

4. Data item is a long integer

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