QUIZ ON : c - INTRODUCTION

INTRODUCTION

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Question No# : 01 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# : 02 out of 50

What is the size of an int data type?

A. 4 Bytes

B. 8 Bytes

C. Depends on the system/compiler

D. Cannot be determined

Question No# : 03 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# : 04 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# : 05 out of 50

Which programming method is followed in C language

A. Algorithm

B. Flow-Charts

C. Procedural

D. Object Oriented

Question No# : 06 out of 50

Which function is used to read a single character from the user in C?

A. getchar()

B. gets()

C. scanf()

D. cin.get()

Question No# : 07 out of 50

What is the size of the int data type (in bytes) in C?

A. 4

B. 8

C. 16

D. 1

Question No# : 08 out of 50

Which of the following is a valid identifier?

A. 1return

B. return1

C. return

D. $return_1

Question No# : 09 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# : 10 out of 50

What are the different types of real data type in C ?

A. float, double

B. short int, double, long int

C. float, double, long double

D. double, long int, float

Question No# : 11 out of 50

in C language How will you print '\n' on the screen?

A. printf("\n");

B. echo '\n';

C. printf('\n');

D. printf('\\n')

Question No# : 12 out of 50

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

A. volatile

B. true

C. friend

D. export

Question No# : 13 out of 50

Which is an incorrect variable name?

A. Id_No

B. ID_NO

C. IdNo

D. Id No

Question No# : 14 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# : 15 out of 50

Standard ANSI C recognizes ______ number of keywords?

A. 30

B. 32

C. 36

D. 40

Question No# : 16 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# : 17 out of 50

The && and | | operators

A. compare two numeric values

B. combine two numeric values

C. compare two boolean values

D. None of the above

Question No# : 18 out of 50

printf (%d, printf (infomax));

A. results in a syntax error

B. output Infomax7

C. outputs garbage

D. outputs infomax and terminates abruptly

Question No# : 19 out of 50

What is correct order of precedence in C?

A. Addition, Division, Modulus

B. Addition, Modulus, Division

C. Multiplication, Substration, Modulus

D. Modulus, Multiplication, Substration

Question No# : 20 out of 50

a C variable cannot start with

A. A number

B. A special symbol other than underscore

C. Both of the above

D. An alphabet

Question No# : 21 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# : 22 out of 50

Which one of the following is not a valid identifier?

A. _infomax

B. 3infomax

C. infomax_ica

D. infomax123

Question No# : 23 out of 50

Which of the following cannot be used in identifiers?

A. Spaces

B. Digits

C. Underscores

D. Letters

Question No# : 24 out of 50

a ‘C’ expression contains relational, assignment and arithmetic operators. There are no parentheses used. They will be evaluated in which of the following order

A. Assignment Relational Arithmetic

B. Arithmetic Relational Assignment

C. Relational Arithmetic Assignment

D. Assignment Arithmetic Relational

Question No# : 25 out of 50

The result of a Relational operation is always

A. Either True or False

B. is less than or is more than

C. is equal or less or more

D. All of the above

Question No# : 26 out of 50

Which one of the following is not a reserved keyword for C?

A. auto

B. case

C. main

D. default

Question No# : 27 out of 50

Which is valid C expression?

A. int my_num = 100,000;

B. int my_num = 100000;

C. int my num = 1000;

D. int $my_num = 10000;

Question No# : 28 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# : 29 out of 50

What is required in each C program?

A. Input data

B. The program does not require any function.

C. Output data

D. The program must have at least one function.

Question No# : 30 out of 50

What is the result of the following code: int a = 10, b = 20; printf("%d", a > b ? a : b);

A. 10

B. 20

C. 0

D. None

Question No# : 31 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# : 32 out of 50

Which of the following can be used as a variable name?

A. no of students

B. char

C. 7th

D. myName

Question No# : 33 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# : 34 out of 50

The format identifier ‘%i’ is also used for _____ data type.

A. char

B. int

C. float

D. double

Question No# : 35 out of 50

What will be the output of the following code segment?<pre>int x = 24, y = 39, z = 45; z = x + y; y = z - y; x = z - y; printf("\n%d %d %d", x, y, z);</pre>

A. 24 39 63

B. 39 24 63

C. 24 39 45

D. 39 24 45

Question No# : 36 out of 50

Which one of the following are not valid variable names in C?

A. float_int, keyword, A1

B. ANSI, ascii, cpu

C. valid, variable, name

D. None of the above

Question No# : 37 out of 50

When the following piece of code is executed, what happens?<pre>b = 3; a = b++;</pre>

A. a contains 3 and b contains 4

B. a contains 4 and b contains 4

C. a contains 4 and b contains 3

D. a contains 3 and b contains 3

Question No# : 38 out of 50

What is the output of the following code?<pre>main() { int a, b; a=b=4; b=a++; printf("%d %d %d %d", a++, --b, ++a, b--); }</pre>

A. 5 3 7 3

B. Syntax error

C. 5 4 5 3

D. 6 2 6 4

Question No# : 39 out of 50

which is used to converts an expression to a specified data type

A. Logical Operator

B. Conditional Operator

C. typecast

D. Ternary

Question No# : 40 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# : 41 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# : 42 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# : 43 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# : 44 out of 50

All keywords in C are in

A. LowerCase letters

B. UpperCase letters

C. CamelCase letters

D. None of these

Question No# : 45 out of 50

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

A. A

B. B

C. ADA

D. C++

Question No# : 46 out of 50

C Programming Language was developed and written by

A. Martin Richards

B. Dennis Ritchie

C. Ken Thompson

D. Herman Hellorith

Question No# : 47 out of 50

Which of the following is a correct way to declare an integer variable in C?

A. int num;

B. integer num;

C. num int;

D. num integer;

Question No# : 48 out of 50

Which is the only C function all programs must contain?

A. start()

B. printf()

C. main()

D. getch()

Question No# : 49 out of 50

What is the correct syntax to output "Hello World" in C?

A. print("Hello World");

B. echo("Hello World");

C. printf("Hello World");

D. None of these

Question No# : 50 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