QUIZ ON : c - INTRODUCTION

INTRODUCTION

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Question No# : 01 out of 50

C programs are converted into machine language with the help of

A. An Editor

B. A compiler

C. An operating system

D. None of these

Question No# : 02 out of 50

What is the output of the following code?<pre>int a = 10, b = 5; printf("%d", a / b);</pre>

A. 5

B. 2

C. 0.5

D. 15

Question No# : 03 out of 50

in C language the output of 14 % 4 is

A. 1

B. 2

C. 3

D. 4

Question No# : 04 out of 50

Which of the following is a logical operator in C?

A. &&

B. | |

C. !

D. All of the above

Question No# : 05 out of 50

The preprocessor directives start with

A. //

B. /

C. #

D. /*

Question No# : 06 out of 50

What is the output of the following code:int x = 5;printf("%d", x++);

A. 4

B. 5

C. 6

D. Undefined

Question No# : 07 out of 50

What will be the output of the following C code? printf("%d", sizeof(char));

A. 2

B. 4

C. 1

D. Depends on the system

Question No# : 08 out of 50

Who is father of C Language?

A. Bjarne Stroustrup

B. James A. Gosling

C. Dennis Ritchie

D. Dr. E.F. Codd

Question No# : 09 out of 50

What is the purpose of the #include directive in C?

A. It is used to define global variables

B. It is used to define a macro

C. It is used to include standard or user-defined header files in the program

D. It is used to include comments in the code

Question No# : 10 out of 50

What is the correct value to return to the operating system upon the successful completion of a program?

A. 1

B. -1

C. 0

D. 2

Question No# : 11 out of 50

What will be the output of the following code?<pre>int a = 10, b = 20; printf("%d", a + b);</pre>

A. 30

B. 1020

C. 10+20

D. Compiler error

Question No# : 12 out of 50

Find the output of following code : <pre>int main() { int i=-2; printf (“-i=%d”,-i); return b; }</pre>

A. â€“i=2

B. i=-2

C. â€“i=-2

D. â€“i=+2

Question No# : 13 out of 50

Which of the following operators in C has the highest precedence?

A. *

B. +

C. ++

D. &&

Question No# : 14 out of 50

Precedence is used

A. To determine which operator evaluated first from left to right.

B. To determine the level of an operator in a program.

C. To determine how an expression involving more than one operator is evaluated.

D. To check the expression is valid or not.

Question No# : 15 out of 50

Which of the following is a valid identifier?

A. 1return

B. return1

C. return

D. $return_1

Question No# : 16 out of 50

if a=8, b=3 and c=-5 are integers, then value of a*b/c is

A. -4

B. -2.8

C. +2.8

D. +3

Question No# : 17 out of 50

Which of following is not a valid name for a C variable?

A. infomax

B. info_max

C. info max

D. All of these

Question No# : 18 out of 50

What is the output of this statement <pre>printf("%d", (a++));</pre>

A. The value of (a + 1)

B. Error message

C. Garbage

D. The current value of a

Question No# : 19 out of 50

Identify the correct sequence of steps to run a c program

A. link, load, code, compile and execute

B. code, compile, link, execute and load

C. code, compile, link, load and execute

D. compile, code, link, load and execute

Question No# : 20 out of 50

Which is correct with respect to the size of the data types?

A. char > int > float

B. int > char > float

C. char < int < double

D. double > char > int

Question No# : 21 out of 50

Which is an incorrect variable name?

A. Id_No

B. ID_NO

C. IdNo

D. Id No

Question No# : 22 out of 50

What is short int in C programming?

A. The basic data type of C

B. Qualifier

C. Short is the qualifier and int is the basic data type

D. All of the mentioned

Question No# : 23 out of 50

What is the size of an int data type in C?

A. 2 bytes

B. 4 bytes

C. 8 bytes

D. 1 byte

Question No# : 24 out of 50

What will be output if you compile and execute the following ‘C’ code?<pre>void main() { int i=4,x; x=++i + ++i + ++i; printf("%d",x); }</pre>

A. 21

B. 18

C. 19

D. Compilation error

Question No# : 25 out of 50

Which of the following is a valid string constant?

A. “programming Trick”

B. “programming"

C. ‘programming'

D. $ programming $

Question No# : 26 out of 50

If a is an integer variable, then a = 5/2 will return a value

A. 2.5

B. 2

C. 2.000000

D. 2.500000

Question No# : 27 out of 50

What is the output of the following code: int x = 5; printf("%d", x++);

A. 4

B. 5

C. 6

D. Undefined

Question No# : 28 out of 50

Which of the following software translates source code into object code?

A. Compiler

B. Interpreter

C. Assembler

D. None of These

Question No# : 29 out of 50

Which of the following is not a valid C variable name?

A. int number;

B. float rate;

C. int variable_count;

D. int $main;

Question No# : 30 out of 50

Which keyword is used to prevent any changes in the variable within a C program?

A. immutable

B. mutable

C. const

D. volatile

Question No# : 31 out of 50

Which one is incorrect statement for C Language?

A. C compiler supports octal integer constant.

B. C compiler supports hexadecimal integer constant.

C. C compiler supports binary integer constant.

D. C compiler supports decimal integer constant.

Question No# : 32 out of 50

Which of the following is not a keyword in C?

A. int

B. float

C. include

D. char

Question No# : 33 out of 50

By default a real number is treated as a

A. float

B. double

C. long double

D. far double

Question No# : 34 out of 50

What is the output of the following code?<pre>int a = 5; printf("%d", a == 5);</pre>

A. 0

B. 1

C. 5

D. Undefined

Question No# : 35 out of 50

Which keyword is used to prevent a variable from being modified?

A. final

B. constant

C. const

D. static

Question No# : 36 out of 50

Which of the following is true for variable names in C?

A. They can contain alphanumeric characters as well as special characters

B. It is not an error to declare a variable to be one of the keywords(like goto, static)

C. Variable names cannot start with a digit

D. Variable can be of any length

Question No# : 37 out of 50

Which of the following cannot be a variable name in C?

A. volatile

B. true

C. friend

D. export

Question No# : 38 out of 50

Which of the following is true about interpreters?

A. They execute programs faster than compilers

B. They translate the entire program at once

C. They translate and execute code line by line

D. They are not used in modern programming

Question No# : 39 out of 50

Standard ANSI C recognizes ______ number of keywords?

A. 30

B. 32

C. 36

D. 40

Question No# : 40 out of 50

Which is invalid name of identifier?

A. world

B. addition23

C. test-name

D. factorial

Question No# : 41 out of 50

What will be the output of the following pseudo code ?<pre>Integer a Set a =4 do print a + 2 a = a-1 while (a not equals 0) end while</pre>

A. 6 6 6 6

B. 6 5 4 3

C. 6 7 8 9

D. 6 8 10 12

Question No# : 42 out of 50

C Language developed at _________?

A. AT & Ts Bell Laboratories of USA in 1972

B. AT & Ts Bell Laboratories of USA in 1970

C. Sun Microsystems in 1973

D. Cambridge University in 1972

Question No# : 43 out of 50

What is the difference between a declaration and a definition of a variable?

A. Both can occur multiple times, but a declaration must occur first.

B. A definition occurs once, but a declaration may occur many times.

C. Both can occur multiple times, but a definition must occur first.

D. A declaration occurs once, but a definition may occur many times.

Question No# : 44 out of 50

Which of the following is false in ‘C’ Programming Language

A. Keywords can be used as variable names

B. Variable names can contain digits

C. Variable names do not contain blank spaces

D. Capital letters can be used in variable names.

Question No# : 45 out of 50

Which is the only C function all programs must contain?

A. start()

B. printf()

C. main()

D. getch()

Question No# : 46 out of 50

In C, which function is used to obtain user input?

A. print()

B. scanf()

C. input()

D. All of the above

Question No# : 47 out of 50

The conditional operator ( ? : ) is also known as

A. Binary operator

B. Unary operator

C. Ternary operator

D. All of the above

Question No# : 48 out of 50

Which numbering system is not handled directly by the printf() conversion specifies ?

A. Decimal

B. Binary

C. Octal

D. Hexadecimal

Question No# : 49 out of 50

Which of the following is not logical operator?

A. &

B. &&

C. ||

D. !

Question No# : 50 out of 50

How many bytes does the int data type usually occupy in C?

A. 1

B. 2

C. 4

D. 8