Very short question and answer from C programming for SEE and grade 10 students

 Very short question and answer from C programming for SEE and grade 10 students

(It carries 1 Mark)

Answer the following questions in short.

1)      List any two types of data types used in C language. (Specification Grid 2077, SEE Grade promotion exam 2078, SEE 2079) (Spec. grid 2065, SLC 2065, supp. 2065, 2066, SLC 2068, 2070, supp. 2070, SEE 2072, 2074)

Ans:  Data types used in C language are:

i) Integer (int)

ii) String (chr)

iii) Float (float)

iv) Long integer (double)

 

2) Write any two advantages of structured programming.(SLC 2066)

Ans:  Following are the two advantages of structured programming:

·         Easy to understand
·         Easy to debug.
·         More reliable
·         It is program oriented. 

 ·         Modules can be re-used.

 

3)      Write any two characteristics/features of C language. (SLC 2067, 2069, 2071, SEE 2073 Supp, Specification Grid 2077)

OR

          Write any two advantages of structure programming.  (SEE 2075)

Ans:  The characteristics of C language are as follows:

·         It is a small programming language which occupies less memory space.
·         It has enough numbers of in-built functions and operators.
·         It has verity of data types to represent different kind of data.
·         It is a bridge between high level and low-level language.

·         It is machine independent

 4)      What is C programming?

Ans:  C is a powerful and versatile general-purpose programming language known for its efficiency and direct access to hardware.

 

 5)      Write the difference between QBASIC and C language.

Ans:  The difference between QBASIC and C language are as follows:

QBASIC	C
a)  It is a high-level programming language.	a) It is a high-level programming language with the features of a low-level programming language.
b) It is a general programming language	b)    It is a system programming language.
c)    It supports limited data type.	c)    It supports a wide range of data types.
d)  It supports both sub-procedure and function procedures.	d) It supports only function procedures.

 

6)    What is character set? List the different character set used in C.

Ans:  The character set consists of alphabet digit or special symbol used to represent information.

          Character set used in C are as follows:

Alphabets	Uppercase (i.e A,B, ……….Y,Z) or Lowercase (i.e. a,b,…………y,z)
Digits	0,1,2,………….8,9
Special symbol	+, -, *, /, =, ( ), [ ], <>, ‘, “, !, #, %, &, _, |, ^, ~, \, ., ;, “, ?
White space characters	Blank space, new line, tab etc..

 

7)    What is keyword? List the different keyword of C.

Ans:  Keywords are words whose meaning has already been explained to the compiler or the computer. There are about 32 keywords in C and they are as here under:

Auto	Double	If	Static
Break	Else	Int	Struct
Case	Enum	Long	Switch
Char	Extern	Near	Typedef
Const	Float	Register	Union
Continue	For	Return	Unsigned
Default	Far	Short	Void
do	goto	signed	While

 

8) What is a header file?

Ans:  A header file is a standard file that contains definitions of variables and functions that are necessary for the functioning of a program.

 9)  Write any four examples of header files in 'C' Programming.

Ans:  <stdio.h>, <conio.h>, <string.h>, <math.h> are the examples of header files.

 

10)    What are the similarities in QBASIC and C language.

Ans:  The following are the similarities in QBASIC and C language: 

• Both languages are used to develop structured programs.
• Both languages support local and global variables.
• Both languages support procedures.

 

11)    What is identifier?

Ans:  Identifiers can be defined as the name of the variables, functions, array, structure created by the programmer.

 

12)    What is operator in C? List the different types of operators available in C.

Ans:  Operators are the special symbol that perform certain action on one and more than one value or variable and generate the output. Following are the operators supported by C.

• Arithmetic operators
• Relational operators
• Logical operators
• Unary operator or Increment and decrement operators

 

13)    What is variable?  (SEE 2073)

Ans:  The data item whose value changes during the execution of a program is called variable.

 

14)    What is structure programming? Give examples

Ans:  Structured programming (sometimes known as modular programming) is a programming paradigm that facilitates the creation of programs with readable code and reusable components. Examples: Pascal and 'C'.

 

15)    Why 'C' is called a structure programming?

Ans:  C is called a structured programming language because to solve a large problem, C programming language divides the problem into smaller structural blocks each of which handles a particular responsibility

 

16)    Write the header files and their functions with examples.

Ans:  Following are the header files used in 'C' programming.

Header files	Functions	Supported commands
<stdio.h>	It is a standard input output header file. It contain the function definition of input output functions.	printf(), scanf(), gets(), puts() etc.
<conio.h>	It is used to console input output.	getch(), clrscr() etc.
<string.h>	It is used to string processing functions.	Strlen(), strcpy(). strlwr(), strcat(), strcmp() etc
<math.h>	It is used to solve the mathematical calculation.	Sqrt(), sin(), cos(), pow(),log() etc.
<graphics.h>	It is used to process the graphics functions.	line(), circle(), rectangle() etc.

 

17)    Define constant. List its types.

Ans:  Constant are the values which remain unchanged during program execution. C constant can be classified into two components.

a)       Primary constant:   Eg. Integer, real, character and string

b)       Secondary Constant: Eg. Array, pointer, union, structure etc..

 

18)    What is Data type?

Ans:  Data types refer to the type of data or variable which is to be stored and used in the program.

 

19)    What is format specifier?

Ans:  Format specifiers can be defined as the operators which are used in association with printf() function for printing the data that is referred by any object or any variable.

 

20)    List any four format specifier used in 'C' programming.

Ans:    Following are the format secifier used in 'C' programming.        

Data types	Format specifiers symbol
Integer	%d
float (simple)	%f
Character	%c
String	%s

 

21)    What is a control statement? List its examples.

Ans:  Control statements enable us to specify the flow of program control; ie, the order in which the instructions in a program must be executed.

Following are the types of control statements.       

• Selection / decision statements (if, switch)
• Iteration/looping statement. (for, while)
• Jumping statement. (break, continue, return)

 

22)    What is decision statement?

Ans:  Decision-making statements are the statements that are used to verify a given condition and decide whether a block of statements gets executed or not based on the condition result.

 

23)    What is switch statement in 'c'?

Ans:  A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each switch case.

 

24)    What do you mean by looping? List examples of looping in 'C'

Ans:  A loop statement allows us to execute a statement or group of statements multiple times.  Examples: for lop, while loop, do.....while loop

 

25)    What is unary operator?

Ans:  Unary operators are those operators which needs only one operand to perform an operation. These operators are usually written on left of variables or objects but sometimes can be written on right as well. 

Operator Name	Symbol	Example
Post-increment	<variable> ++	x++ means x=x+1
Post-decrement	<variable> --	x-- means x=x-1
Pre-increment	++<variable>	++x means x=x+1
Pre-decrement	-- <variable>	--x means x=x-1

 

26)    What is arithmetic operators? Give examples.

Ans:  The Arithmetic operators are some of the C Programming Operator, which are used to perform arithmetic operations includes operators like Addition, Subtraction, Multiplication, Division and Modulus. Examples: +, -, *, /, %

 

27)    What is relational operator? Give examples.

Ans:  The symbols which are used to check the relationship between two variables is known as relational operators. Examples: <,>,>=,<=,==,!=

 

28)    What do you mean by logical operators? Give example.

Ans:  Logical Operators are used to combine two or more conditions/constraints or to complement the evaluation of the original condition in consideration. 

          Examples: &&, ||, !

 

29)    What is counter?

Ans: Counter is a variable which controls the loop statement and provides the track to run the loop statement in certain number times.

 

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