CBSE Class 11 Computer Science Constant, Variables and Data Types Assignment

Objective Type Questions

Question: Which of the following is not the correct data type of C language?
a) Char
b) float
c) long
d) double
Answer: float

Question: Which of the following is not an arithmetic operator?
a) +
b) &
c) %
d) *
Answer: &

Question: The operator % can only be applied on which type of values?
a) float values
b) double values
c) int values
d) All of these
Answer: int values

Question: Which of the the following is not a correct value for the type int?
a) 3750
b) 32800
c) -32767
d) 0
Answer: 32800

Question:  What is the value range of data type int in C language?
a) 0 to 32767
b) 0 to 65535
c) -32768 to 32767
d) -32767 to 32768
Answer: -32768 to 32767

Question: Which of the following is a reserve word?
a) for
b) goto
c) doo
d) switch
Answer: doo

Question: What will be the value of the expression 5/6/3/+8/3?
a) 4
b) 2
c) 2.333(appr.)
d) none of the options
Answer: 2

Question: Which of the following is not a C Token?
a) keywords
b) constants
c) operators
d) all of these
Answer: all of these

Question: Which of the following is not a keyword in C Language?
a) const
b) main
c) size of
d) void
Answer: main

Question: There are __ no of arithmetic operators in C Language.
a) 5
b) 4
c) 6
d) 7
Answer: 5

Question: Which name of the variable is wrong?
a) roll-no
b) interest _ paid
c) SUM
d) none of the options
Answer: roll-no

Write True or False

Question: Variables are those quantities which allow change in their value during program implementation.
Answer: True

Question: Delimeter is a symbol which has statement structure and importance.
Answer: True

Question: One char data type always occupies one byte.
Answer: True

Question: Size of operand is its data type.
Answer: True

Question: Semicolon is a declaration delimiter.
Answer: True

Marks Questions

Question: if x=12.4565, then printf(“%3f”,x); will print _?
Answer: 12.457

Question: What will be printed by the statement printf(“%d”,‘B’);
Answer: 66

Question: What will be the value of float x=1/2.0 – 1/2?
Answer: 0.50

Question: A computer program can be extracted into a number of _____
Answer: Tokens

Question: Which keyword is used to declare a variable as a constant?
Answer: const

Question: if a=-11 and b=-3, then what will be the value of a%b?
Answer: -2

Question: How many relational operators are there in C Language?
Answer: 6

Question: If we have operators *, /, ( ), % in an expression, then which of these has highest precedence?
Answer: ( )

Marks Questions

Question: What are delimiters?
Answer: Delimiters are also called separator’s. Delimiters are those symbols which defines the fundamental limits of
program elements. Some of the commonly used delimiters are given below:
Hash – # – It is used for pre-processor directives. For example: #define PI 3.14
Comma – , – It is used as separator during variable declarations. For example: int a,b,c;
Curly Brckets – { } – It is used to define the block of statements
square brackets – [ ] – it is used for arrays. For example: int a[5];
Paarenthesis – ( ) – It is used for functions. For examples: printf( )
Colon – : – It is used for defining labels. For example- my label:

Question: What are Identifiers?
Answer: Identifier’s are the names given to different elements in the C program. A Program element can be a variable,constant, function, array, structure, union etc) An identifier consists by the combination of alphabets and numbers.
When we define the name of identifier, we have to follow some naming rules. These naming rules are given below:
1. An identifier must not begin with a digit.
2. No special character except under scorer is allowed in the identifier.
3. We can not use two consecutive underscores.
4. Maximum 31 characters are allowed in the identifier.
5. We can not use blank space in the identifier.
6. A keyword can not be used as the identifier.
7. Identifier’s are case sensitive.

Question: What are Data Types?
Answer: In programming languages, data types are the set of defined values. A data type points out the type of data)
There are many data types already built into the C Compiler. We can also define our own data types also in C
language. Therefore, we can say that there are two categories of data types:
- Built In data types
- User defined data types
Following table shows the list of buil-in data types in C language:

Marks – Extra Questions

Question: What are Tokens?
Answer: Tokens are the fundamental and smallest elements of the C program. These are like the words and punctuation marks in the C Language. A C program can be extracted into a number of tokens. There are 6 types of tokens in C language which are given below:
1. Keywords: These are the predefine words in the c language. For example: int, float, char, if, else, void etc)
2. Identifiers: These are the name of elements in the program. For example: main, printf, scanf etc)
3. Constants: These are the fixed values in the program. For example: 5, -25, 3.14, ’A’ etc)
4. Strings: These are the set of characters written in double quotes. For example: “Hello”, “H.No.196” etc)
5. Operators: These are the symbols to perform operations. For example: +, -, *, /, >, <, = etc)
6. Special Characters: These are the special symbols in the program. For example: #, &, { }, ( ), [ ], :, ; etc)