12th Class Computer Science Chapter 9 Short Questions with Answers Online Preparation

Question # 1

Differentiate between declaring and defining a variable.

Ans 1: Declaring :
1. A variable declaration does not set aside memory location for the data to be stored. It just informs the compiler the name of the variable and the type of data to be stored in it.
2. Declaration will identify the data type of the identifier.
3. Re-declaration is illegal in C programming language.
Ans 2: Defining :
1. A variable definition set aside memory location for the variable.
2. Definition of the variable will assign some value to it.
3. Re-definition is illegal in C programming language.

Question # 2

Define Data Type.

Ans 1: In C, the data type defines a set of values and aset of operations on those values. We know that computer program manipulates various types of data. In a C program we may need to process different types of data . Therefore variables should be capable of storing data of different types.This is done by associating certain data types to the variables.There are two different types of data.
- Standard Data Types
- User-define Data Types

Question # 3

What is Arithmetic Expression?

Ans 1: An expression, in which only arithmetic operators operate on operands, is known as arithmetic expression. To Solve different mathematicals problems, one needs to write arithmetic expression. Arithmetic expressions involve integers and floating point numbers, which are manipulated with arithmetic operators.

Question # 4

What is the use of assignment statement ?

Ans 1: An Assignment statements gives value to a variable .
Syntax: the general Syntax of an assignment statement is:
Variable = expression;
Example: x= 5
Givess x the value 5.
The value of a variable may be changed.
If x has the value 5, then the assignment statement : x=x+1

Question # 5

Writes any two rules for naming Variables.

Ans 1: 1) A variable name can consist of letters, digits, and the underscore character (_)
2) A variable can only be declared for only one data type.

Question # 6

What are Keywords?

Ans 1: Keywords : Keywords or reserved are the words, which have predefined meanings in C. There are 32 words defined as keywords in C.These have predefined uses and cannot be used or redefined for any other purpose in a C program.They are used by the compiler as an aid to compile the program. They are always written in lower case.
Examples :
- Auto
- Break
- Int
- Double
- For
- If
- Signed
- static

Question # 7

Define Expression with Example?

Ans 1: Expression: An Expression is the combination of operators and operands . The operand may either be a constant or variable.
Example: A+b,7+m

Question # 8

List three names of functions used for charter input.

Ans 1: The data type char is used to represent a letter, number.A char type variable occupies 1 byte in memory and can represent
Individual characters such as 'a' ,'x' '5', and '#' etc. (The character '5' is manipulated quite differently than the integer 5 in the computer, so one should not consider both the same. We shall thoroughly discuss the topic in next chapter).In C,a character is expressed as enclosed in apostrophes such as 'a'.'e','i','o'. And 'u' etc.

Question # 9

What is the use of | | (OR) Operators ?

Ans 1: OE Operators: Logical operator // (logical OR ) when combines two conditions , evaluates to true if any one of the conditions evaluates to true, otherwise evaluates to false .

Question # 10

What is assignment operator ?

Ans 1: The Assignment operator is used to store a value or a computational result in a variable . In C, the symbol= represents the assignment operator e.g. In the following statement, values of the two variables, height and width, are multiplied and the results is assigned to the variable Area
Area = Height*width
The value of the right side of the operator is assigned to the variable on the left side of the assignment operator .

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

ICS Part 2 Computer Science Chapter 9 Short Questions Test With Answer

Online Short Questions For Chapter 9 "ICS Part 2 Computer Science Chapter 9 Short Questions Preparation "

Computer Science - ICS Part 2 Computer Science Chapter 9 Short Questions Preparation

Differentiate between declaring and defining a variable.

Define Data Type.

What is Arithmetic Expression?

What is the use of assignment statement ?

Writes any two rules for naming Variables.

What are Keywords?

Define Expression with Example?

List three names of functions used for charter input.

What is the use of | | (OR) Operators ?

What is assignment operator ?

Prepare Complete Set Wise Questions For Chapter 9 "ICS Part 2 Computer Science Chapter 9 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

ICS Part 2 Computer Science Chapter 9 Short Questions Preparation - Set 1

Differentiate between declaring and defining a variable.

Define Data Type.

What is Arithmetic Expression?

What is the use of assignment statement ?

Writes any two rules for naming Variables.

What are Keywords?

Define Expression with Example?

List three names of functions used for charter input.

What is the use of | | (OR) Operators ?

What is assignment operator ?

ICS Part 2 Computer Science Chapter 9 Short Questions Preparation - Set 2

Define compound assignment statement.

Find out the errors in the following code .

What is variable Initialization ?

Trace the output:Int n = 6;N++;Printf ("%,n");

Predict the output of the following code:Int number =6;++ number;Printf ("%d\n", number);

Differentiate between declaring and defining a variable.

What is Character constant .

Find out the errors from the following code.

Differentiate between Standard Identifier and User-defined identifiers.

What do you Know about C statement ?

ICS Part 2 Computer Science Chapter 9 Short Questions Preparation - Set 3

Described Single Comments in C.

Define Variable declaration.

What is identifier ?

Define Data Type.

Trace the output:Int n = 6;N++;Printf ("%,n");

Why is it important to assign data type to a variable?

Predict the output of the following code:Int number =6;++ number;Printf ("%d\n", number);

What is Arithmetic Expression?

What is increment operator?

List Type of identifier?

ICS Part 2 Computer Science Chapter 9 Short Questions Preparation - Set 4

Differentiate between declaring and defining a variable.

Define Data Type.

Define Constant .

What is the use of AND logical operator?

What is assignment operator ?

Define compound assignment statement.

What is Arithmetic Expression?

Trace the output.Int number = 6;Int x= 0;X =-- number ;Printf ("%d",x);

Identify the errors in the following lines:

What is variable Initialization ?

12th Computer Science Chapter 9 Preparation

Trace the output:
Int n = 6;
N++;
Printf ("%,n");

Predict the output of the following code:
Int number =6;
++ number;
Printf ("%d\n", number);

Trace the output:
Int n = 6;
N++;
Printf ("%,n");

Predict the output of the following code:
Int number =6;
++ number;
Printf ("%d\n", number);

Trace the output.
Int number = 6;
Int x= 0;
X =-- number ;
Printf ("%d",x);