ASCII Chart

 

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Date and time utilities

Strings library

Algorithms

Numerics

Input/output support

Localization support

Atomic operations (C11)

Thread support (C11)

Technical Specifications

 

C language

 

Basic Concepts

comments

ASCII

Translation phases

identifier

scope

lifetime

lookup and name spaces

type

objects and alignment

arithmetic types

the main() function

the as-if rule

undefined behavior

memory model and data races

 

The following chart contains all 128 ASCII decimal (dec), octal (oct), hexadecimal (hex) and character (ch) codes.

dec	oct	hex	ch		dec	oct	hex	ch		dec	oct	hex	ch		dec	oct	hex	ch
0	0	00	NUL (null)		32	40	20	(space)		64	100	40	@		96	140	60	`
1	1	01	SOH (start of header)		33	41	21	!		65	101	41	A		97	141	61	a
2	2	02	STX (start of text)		34	42	22	"		66	102	42	B		98	142	62	b
3	3	03	ETX (end of text)		35	43	23	#		67	103	43	C		99	143	63	c
4	4	04	EOT (end of transmission)		36	44	24	$		68	104	44	D		100	144	64	d
5	5	05	ENQ (enquiry)		37	45	25	%		69	105	45	E		101	145	65	e
6	6	06	ACK (acknowledge)		38	46	26	&		70	106	46	F		102	146	66	f
7	7	07	BEL (bell)		39	47	27	'		71	107	47	G		103	147	67	g
8	10	08	BS (backspace)		40	50	28	(		72	110	48	H		104	150	68	h
9	11	09	HT (horizontal tab)		41	51	29	)		73	111	49	I		105	151	69	i
10	12	0a	LF (line feed - new line)		42	52	2a	*		74	112	4a	J		106	152	6a	j
11	13	0b	VT (vertical tab)		43	53	2b	+		75	113	4b	K		107	153	6b	k
12	14	0c	FF (form feed - new page)		44	54	2c	,		76	114	4c	L		108	154	6c	l
13	15	0d	CR (carriage return)		45	55	2d	-		77	115	4d	M		109	155	6d	m
14	16	0e	SO (shift out)		46	56	2e	.		78	116	4e	N		110	156	6e	n
15	17	0f	SI (shift in)		47	57	2f	/		79	117	4f	O		111	157	6f	o
16	20	10	DLE (data link escape)		48	60	30	0		80	120	50	P		112	160	70	p
17	21	11	DC1 (device control 1)		49	61	31	1		81	121	51	Q		113	161	71	q
18	22	12	DC2 (device control 2)		50	62	32	2		82	122	52	R		114	162	72	r
19	23	13	DC3 (device control 3)		51	63	33	3		83	123	53	S		115	163	73	s
20	24	14	DC4 (device control 4)		52	64	34	4		84	124	54	T		116	164	74	t
21	25	15	NAK (negative acknowledge)		53	65	35	5		85	125	55	U		117	165	75	u
22	26	16	SYN (synchronous idle)		54	66	36	6		86	126	56	V		118	166	76	v
23	27	17	ETB (end of transmission block)		55	67	37	7		87	127	57	W		119	167	77	w
24	30	18	CAN (cancel)		56	70	38	8		88	130	58	X		120	170	78	x
25	31	19	EM (end of medium)		57	71	39	9		89	131	59	Y		121	171	79	y
26	32	1a	SUB (substitute)		58	72	3a	:		90	132	5a	Z		122	172	7a	z
27	33	1b	ESC (escape)		59	73	3b	;		91	133	5b	[		123	173	7b	{
28	34	1c	FS (file separator)		60	74	3c	<		92	134	5c	\		124	174	7c	|
29	35	1d	GS (group separator)		61	75	3d	=		93	135	5d	]		125	175	7d	}
30	36	1e	RS (record separator)		62	76	3e	>		94	136	5e	^		126	176	7e	~
31	37	1f	US (unit separator)		63	77	3f	?		95	137	5f	_		127	177	7f	DEL (delete)

Note: in Unicode, the ASCII character block is known as U+0000..U+007F Basic Latin.