C tokens

keyword
identifier
constant
string-literal
operator
punctuator

ASCII Control Characters

The following table lists ASCII Control codes in octal, decimal, hexadecimal and their corresponding Control-key combinations.

Char	Oct	Dec	Hex	Control-Key	Control Action
NUL	0	0	0	^@	NULl character
SOH	1	1	1	^A	Start Of Heading
STX	2	2	2	^B	Start of TeXt
ETX	3	3	3	^C	End of TeXt
EOT	4	4	4	^D	End Of Transmission
ENQ	5	5	5	^E	ENQuiry
ACK	6	6	6	^F	ACKnowledge
BEL	7	7	7	^G	BELl, rings terminal bell
BS	10	8	8	^H	BackSpace (non-destructive)
HT	11	9	9	^I	Horizontal Tab (move to next tab position)
LF	12	10	a	^J	Line Feed
VT	13	11	b	^K	Vertical Tab
FF	14	12	c	^L	Form Feed
CR	15	13	d	^M	Carriage Return
SO	16	14	e	^N	Shift Out
SI	17	15	f	^O	Shift In
DLE	20	16	10	^P	Data Link Escape
DC1	21	17	11	^Q	Device Control 1, normally XON
DC2	22	18	12	^R	Device Control 2
DC3	23	19	13	^S	Device Control 3, normally XOFF
DC4	24	20	14	^T	Device Control 4
NAK	25	21	15	^U	Negative AcKnowledge
SYN	26	22	16	^V	SYNchronous idle
ETB	27	23	17	^W	End Transmission Block
CAN	30	24	17	^X	CANcel line
EM	31	25	19	^Y	End of Medium
SUB	32	26	1a	^Z	SUBstitute
ESC	33	27	1b	^[	ESCape
FS	34	28	1c	^\	File Separator
GS	35	29	1d	^]	Group Separator
RS	36	30	1e	^^	Record Separator
US	37	31	1f	^_	Unit Separator

Printing Characters

Char	Octal	Dec	Hex	Description
SP	40	32	20	Space
!	41	33	21	Exclamation mark
"	42	34	22	Quotation mark (" in HTML)
#	43	35	23	Cross hatch (number sign)
$	44	36	24	Dollar sign
%	45	37	25	Percent sign
&	46	38	26	Ampersand
`	47	39	27	Closing single quote (apostrophe)
(	50	40	28	Opening parentheses
)	51	41	29	Closing parentheses
*	52	42	2a	Asterisk (star, multiply)
+	53	43	2b	Plus
,	54	44	2c	Comma
-	55	45	2d	Hyphen, dash, minus
.	56	46	2e	Period
/	57	47	2f	Slash (forward or divide)
0	60	48	30	Zero
1	61	49	31	One
2	62	50	32	Two
3	63	51	33	Three
4	64	52	34	Four
5	65	53	35	Five
6	66	54	36	Six
7	67	55	37	Seven
8	70	56	38	Eight
9	71	57	39	Nine
:	72	58	3a	Colon
;	73	59	3b	Semicolon
<	74	60	3c	Less than sign (< in HTML)
=	75	61	3d	Equals sign
>	76	62	3e	Greater than sign (> in HTML)
?	77	63	3f	Question mark
@	100	64	40	At-sign
A	101	65	41	Upper case A
B	102	66	42	Upper case B
C	103	67	43	Upper case C
D	104	68	44	Upper case D
E	105	69	45	Upper case E
F	106	70	46	Upper case F
G	107	71	47	Upper case G
H	110	72	48	Upper case H
I	111	73	49	Upper case I
J	112	74	4a	Upper case J
K	113	75	4b	Upper case K
L	114	76	4c	Upper case L
M	115	77	4d	Upper case M
N	116	78	4e	Upper case N
O	117	79	4f	Upper case O
P	120	80	50	Upper case P
Q	121	81	51	Upper case Q
R	122	82	52	Upper case R
S	123	83	53	Upper case S
T	124	84	54	Upper case T
U	125	85	55	Upper case U
V	126	86	56	Upper case V
W	127	87	57	Upper case W
X	130	88	58	Upper case X
Y	131	89	59	Upper case Y
Z	132	90	5a	Upper case Z
[	133	91	5b	Opening square bracket
\	134	92	5c	Backslash (Reverse slant)
]	135	93	5d	Closing square bracket
^	136	94	5e	Caret (Circumflex)
_	137	95	5f	Underscore
`	140	96	60	Opening single quote
a	141	97	61	Lower case a
b	142	98	62	Lower case b
c	143	99	63	Lower case c
d	144	100	64	Lower case d
e	145	101	65	Lower case e
f	146	102	66	Lower case f
g	147	103	67	Lower case g
h	150	104	68	Lower case h
i	151	105	69	Lower case i
j	152	106	6a	Lower case j
k	153	107	6b	Lower case k
l	154	108	6c	Lower case l
m	155	109	6d	Lower case m
n	156	110	6e	Lower case n
o	157	111	6f	Lower case o
p	160	112	70	Lower case p
q	161	113	71	Lower case q
r	162	114	72	Lower case r
s	163	115	73	Lower case s
t	164	116	74	Lower case t
u	165	117	75	Lower case u
v	166	118	76	Lower case v
w	167	119	77	Lower case w
x	170	120	78	Lower case x
y	171	121	79	Lower case y
z	172	122	7a	Lower case z
{	173	123	7b	Opening curly brace
\|	174	124	7c	Vertical line
}	175	125	7d	Closing curly brace
~	176	126	7e	Tilde (approximate)
DEL	177	127	7f

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C tokens

ASCII Control Characters

Printing Characters

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