C Language Notes

 

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•  What is C Programming.

C Programming language was developed in 1972 by Dennis Ritchie at bell laboratories of AT&T (American Telephone & Telegraph), located the USA, Dennis Ritchie is known as the founder of the c language.

                It was developed to over come the problems of previous language such as B, BCPL, etc. Initially C language was developed to be used in Unix operating system It inhents many features of previous language such as B and BCPL.

                                                "YA" 

• What is C.

=> It is high level language as well as low level language.

                                    'OR'

=> Middle level language.

• Point ways Definition (What is C)

1. It is a fundamental broadly useful programming language.
2. It is the foundation of all general programming language so it is called essential programming language.
3. It is developed by Dennis Ritchie.
4. It is developed at AT and T'S bell laboratory(USA)
5. It was developed in 1972.
6. Fundamentally it was created to execute UNIX Operating framework.

Language                            Year                            Developed By:-

Algol                                    1960                          International Group

BCPL                                   1967                          Martin Richard

B                                           1970                          Ken Thomposon

C                                           1972                          Dennis Ritche

K&R C                                  1978                         Kenighan & Ritche

• What is c.(Best Definition)

:- C is a programming language developed at AT&T'S bell laboratories at USA in 1972.

:- Designed and written by Dennis Ritchie.

Ø  It is popular because it is easy to use memory convenient and simple to use.

   Ø  To be able to learn higher level language like C++, JAVA, you must have the knowledge.

   Ø  If was supposed to be the origin from a basic level language called as B.

   Ø  This language survived from 3 decodes.

 What is Comment line in c.

Description-

In the C Programming Language, you can put remarks in your source code that are not executed as a feature of the program.

Remarks give lucidity to the C source code permitting others to all the more likely comprehend what the code was planned to achieve and enormously helping in troubleshooting the code. Remarks are particularly significant in huge ventures containing hundreds or thousands of lines of source code or in projects in which numerous benefactors are chipping away at the source code.

·     A remark begins with a slice bullet/* and closes with a reference mark cut */and can be anyplace in your program. Remarks can traverse a few lines inside your C program. Remarks are ordinarily added straight over the connected C source code.

     Comment Line*

1. /* Statement */(Multiline comment)

Ex:-  /* 1

             1 2

             1 2 3 */

ii.  // Statement (Single comment)

Ex:- // It is my first Program.

          What is Data Type:-

  è     The data type of data is called datatype specify the type to data that a variable can store such as integer floating, Character, String e.t.c there are four types of data types.

rd    *How many types of data type.

i. Basic data type

ii. Drived data type

iii. Enmeration data type

iv.  Word data type.

Data Type	Used for	Example
String	Alphanumeric characters	hello world, Alice, Bob123
Integer	Whole numbers	7, 12, 999
Float (floating point)	Number with a decimal point	3.15, 9.06, 00.13
Character	Encoding text numerically	97 (in ASCII, 97 is a lower case 'a')
Boolean	Representing logical values	TRUE, FALSE

How Many types of ASCII table

    ASCII Printable Characters

Char	Number	Description
	0 - 31	Control characters (see below)
	32	space
!	33	exclamation mark
"	34	quotation mark
#	35	number sign
$	36	dollar sign
%	37	percent sign
&	38	ampersand
'	39	apostrophe
(	40	left parenthesis
)	41	right parenthesis
*	42	asterisk
+	43	plus sign
,	44	comma
-	45	hyphen
.	46	period
/	47	slash
0	48	digit 0
1	49	digit 1
2	50	digit 2
3	51	digit 3
4	52	digit 4
5	53	digit 5
6	54	digit 6
7	55	digit 7
8	56	digit 8
9	57	digit 9
:	58	colon
;	59	semicolon
<	60	less-than
=	61	equals-to
>	62	greater-than
?	63	question mark
@	64	at sign
A	65	uppercase A
B	66	uppercase B
C	67	uppercase C
D	68	uppercase D
E	69	uppercase E
F	70	uppercase F
G	71	uppercase G
H	72	uppercase H
I	73	uppercase I
J	74	uppercase J
K	75	uppercase K
L	76	uppercase L
M	77	uppercase M
N	78	uppercase N
O	79	uppercase O
P	80	uppercase P
Q	81	uppercase Q
R	82	uppercase R
S	83	uppercase S
T	84	uppercase T
U	85	uppercase U
V	86	uppercase V
W	87	uppercase W
X	88	uppercase X
Y	89	uppercase Y
Z	90	uppercase Z
[	91	left square bracket
\	92	backslash
]	93	right square bracket
^	94	caret
_	95	underscore
`	96	grave accent
a	97	lowercase a
b	98	lowercase b
c	99	lowercase c
d	100	lowercase d
e	101	lowercase e
f	102	lowercase f
g	103	lowercase g
h	104	lowercase h
i	105	lowercase i
j	106	lowercase j
k	107	lowercase k
l	108	lowercase l
m	109	lowercase m
n	110	lowercase n
o	111	lowercase o
p	112	lowercase p
q	113	lowercase q
r	114	lowercase r
s	115	lowercase s
t	116	lowercase t
u	117	lowercase u
v	118	lowercase v
w	119	lowercase w
x	120	lowercase x
y	121	lowercase y
z	122	lowercase z
{	123	left curly brace
|	124	vertical bar
}	125	right curly brace
~	126	tilde