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)

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