ASCII码表查询

ASCII码的取值范围是0~127，可以用7个bit表示。C语言中char型变量的大小规定为一字节，如果存放ASCII码则只用到低7位，高位为0。

十进制	二进制	八进制	十六进制	字符
0	0	00	0x0	NUL (Null char.)
1	1	01	0x1	SOH (Start of Header)
2	10	02	0x2	STX (Start of Text)
3	11	03	0x3	ETX (End of Text)
4	100	04	0x4	EOT (End of Transmission)
5	101	05	0x5	ENQ (Enquiry)
6	110	06	0x6	ACK (Acknowledgment)
7	111	07	0x7	BEL (Bell)
8	1000	010	0x8	BS (Backspace)
9	1001	011	0x9	HT (Horizontal Tab)
10	1010	012	0xa	LF (Line Feed)
11	1011	013	0xb	VT (Vertical Tab)
12	1100	014	0xc	FF (Form Feed)
13	1101	015	0xd	CR (Carriage Return)
14	1110	016	0xe	SO (Shift Out)
15	1111	017	0xf	SI (Shift In)
16	10000	020	0x10	DLE (Data Link Escape)
17	10001	021	0x11	DC1 (XON) (Device Control 1)
18	10010	022	0x12	DC2 (Device Control 2)
19	10011	023	0x13	DC3 (XOFF)(Device Control 3)
20	10100	024	0x14	DC4 (Device Control 4)
21	10101	025	0x15	NAK (Negative Acknowledgement)
22	10110	026	0x16	SYN (Synchronous Idle)
23	10111	027	0x17	ETB (End of Trans. Block)
24	11000	030	0x18	CAN (Cancel)
25	11001	031	0x19	EM (End of Medium)
26	11010	032	0x1a	SUB (Substitute)
27	11011	033	0x1b	ESC (Escape)
28	11100	034	0x1c	FS (File Separator)
29	11101	035	0x1d	GS (Group Separator)
30	11110	036	0x1e	RS (Request to Send)(Record Separator)
31	11111	037	0x1f	US (Unit Separator)
32	100000	040	0x20	SP (Space)
33	100001	041	0x21	! (exclamation mark)
34	100010	042	0x22	" (double quote)
35	100011	043	0x23	# (number sign)
36	100100	044	0x24	$ (dollar sign)
37	100101	045	0x25	% (percent)
38	100110	046	0x26	& (ampersand)
39	100111	047	0x27	' (single quote)
40	101000	050	0x28	( (left/opening parenthesis)
41	101001	051	0x29	) (right/closing parenthesis)
42	101010	052	0x2a	* (asterisk)
43	101011	053	0x2b	+ (plus)
44	101100	054	0x2c	, (comma)
45	101101	055	0x2d	- (minus or dash)
46	101110	056	0x2e	. (dot)
47	101111	057	0x2f	/ (forward slash)
48	110000	060	0x30	0
49	110001	061	0x31	1
50	110010	062	0x32	2
51	110011	063	0x33	3
52	110100	064	0x34	4
53	110101	065	0x35	5
54	110110	066	0x36	6
55	110111	067	0x37	7
56	111000	070	0x38	8
57	111001	071	0x39	9
58	111010	072	0x3a	: (colon)
59	111011	073	0x3b	; (semi-colon)
60	111100	074	0x3c	< (less than)
61	111101	075	0x3d	= (equal sign)
62	111110	076	0x3e	> (greater than)
63	111111	077	0x3f	? (question mark)
64	1000000	0100	0x40	@ (AT symbol)
65	1000001	0101	0x41	A
66	1000010	0102	0x42	B
67	1000011	0103	0x43	C
68	1000100	0104	0x44	D
69	1000101	0105	0x45	E
70	1000110	0106	0x46	F
71	1000111	0107	0x47	G
72	1001000	0110	0x48	H
73	1001001	0111	0x49	I
74	1001010	0112	0x4a	J
75	1001011	0113	0x4b	K
76	1001100	0114	0x4c	L
77	1001101	0115	0x4d	M
78	1001110	0116	0x4e	N
79	1001111	0117	0x4f	O
80	1010000	0120	0x50	P
81	1010001	0121	0x51	Q
82	1010010	0122	0x52	R
83	1010011	0123	0x53	S
84	1010100	0124	0x54	T
85	1010101	0125	0x55	U
86	1010110	0126	0x56	V
87	1010111	0127	0x57	W
88	1011000	0130	0x58	X
89	1011001	0131	0x59	Y
90	1011010	0132	0x5a	Z
91	1011011	0133	0x5b	[ (left/opening bracket)
92	1011100	0134	0x5c	\ (back slash)
93	1011101	0135	0x5d	] (right/closing bracket)
94	1011110	0136	0x5e	^ (caret/circumflex)
95	1011111	0137	0x5f	_ (underscore)
96	1100000	0140	0x60	`
97	1100001	0141	0x61	a
98	1100010	0142	0x62	b
99	1100011	0143	0x63	c
100	1100100	0144	0x64	d
101	1100101	0145	0x65	e
102	1100110	0146	0x66	f
103	1100111	0147	0x67	g
104	1101000	0150	0x68	h
105	1101001	0151	0x69	i
106	1101010	0152	0x6a	j
107	1101011	0153	0x6b	k
108	1101100	0154	0x6c	l
109	1101101	0155	0x6d	m
110	1101110	0156	0x6e	n
111	1101111	0157	0x6f	o
112	1110000	0160	0x70	p
113	1110001	0161	0x71	q
114	1110010	0162	0x72	r
115	1110011	0163	0x73	s
116	1110100	0164	0x74	t
117	1110101	0165	0x75	u
118	1110110	0166	0x76	v
119	1110111	0167	0x77	w
120	1111000	0170	0x78	x
121	1111001	0171	0x79	y
122	1111010	0172	0x7a	z
123	1111011	0173	0x7b	{ (left/opening brace)
124	1111100	0174	0x7c	\| (vertical bar)
125	1111101	0175	0x7d	} (right/closing brace)
126	1111110	0176	0x7e	~ (tilde)
127	1111111	0177	0x7f	DEL (delete)

ASCII码表查询

登录后可以享受更多权益