1. C++ 转义字符
转义字符 | 意义 | ASCII码值(十进制) |
\a | 响铃(BEL) | 007 |
\b | 退格(BS) ,将当前位置移到前一列 | 008 |
\f | 换页(FF),将当前位置移到下页开头 | 012 |
\n | 换行(LF) ,将当前位置移到下一行开头 | 010 |
\r | 回车(CR) ,将当前位置移到本行开头 | 013 |
\t | 水平制表(HT) (跳到下一个TAB位置) | 009 |
\v | 垂直制表(VT) | 011 |
\\ | 代表一个反斜线字符‘‘\‘ | 092 |
\‘ | 代表一个单引号(撇号)字符 | 039 |
\" | 代表一个双引号字符 | 034 |
\0 | 空字符(NULL) | 000 |
\ddd | 1到3位八进制数所代表的任意字符 | 三位八进制 |
\xhh | 1到2位十六进制所代表的任意字符 | 二位十六进制 |
2. C++ ASCII表
八进制 |
十六进制 |
十进制 |
字符 |
八进制 |
十六进制 |
十进制 |
字符 |
0 |
0 |
0 |
nul |
100 |
40 |
64 |
@ |
1 |
1 |
1 |
soh |
101 |
41 |
65 |
A |
2 |
2 |
2 |
stx |
102 |
42 |
66 |
B |
3 |
3 |
3 |
etx |
103 |
43 |
67 |
C |
4 |
4 |
4 |
eot |
104 |
44 |
68 |
D |
5 |
5 |
5 |
enq |
105 |
45 |
69 |
E |
6 |
6 |
6 |
ack |
106 |
46 |
70 |
F |
7 |
7 |
7 |
bel |
107 |
47 |
71 |
G |
10 |
8 |
8 |
bs |
110 |
48 |
72 |
H |
11 |
9 |
9 |
ht |
111 |
49 |
73 |
I |
12 |
0a |
10 |
nl |
112 |
4a |
74 |
J |
13 |
0b |
11 |
vt |
113 |
4b |
75 |
K |
14 |
0c |
12 |
ff |
114 |
4c |
76 |
L |
15 |
0d |
13 |
er |
115 |
4d |
77 |
M |
16 |
0e |
14 |
so |
116 |
4e |
78 |
N |
17 |
0f |
15 |
si |
117 |
4f |
79 |
O |
20 |
10 |
16 |
dle |
120 |
50 |
80 |
P |
21 |
11 |
17 |
dc1 |
121 |
51 |
81 |
Q |
22 |
12 |
18 |
dc2 |
122 |
52 |
82 |
R |
23 |
13 |
19 |
dc3 |
123 |
53 |
83 |
S |
24 |
14 |
20 |
dc4 |
124 |
54 |
84 |
T |
25 |
15 |
21 |
nak |
125 |
55 |
85 |
U |
26 |
16 |
22 |
syn |
126 |
56 |
86 |
V |
27 |
17 |
23 |
etb |
127 |
57 |
87 |
W |
30 |
18 |
24 |
can |
130 |
58 |
88 |
X |
31 |
19 |
25 |
em |
131 |
59 |
89 |
Y |
32 |
1a |
26 |
sub |
132 |
5a |
90 |
Z |
33 |
1b |
27 |
esc |
133 |
5b |
91 |
[ |
34 |
1c |
28 |
fs |
134 |
5c |
92 |
\ |
35 |
1d |
29 |
gs |
135 |
5d |
93 |
] |
36 |
1e |
30 |
re |
136 |
5e |
94 |
^ |
37 |
1f |
31 |
us |
137 |
5f |
95 |
_ |
40 |
20 |
32 |
sp |
140 |
60 |
96 |
‘ |
41 |
21 |
33 |
! |
141 |
61 |
97 |
a |
42 |
22 |
34 |
" |
142 |
62 |
98 |
b |
43 |
23 |
35 |
# |
143 |
63 |
99 |
c |
44 |
24 |
36 |
$ |
144 |
64 |
100 |
d |
45 |
25 |
37 |
% |
145 |
65 |
101 |
e |
46 |
26 |
38 |
& |
146 |
66 |
102 |
f |
47 |
27 |
39 |
` |
147 |
67 |
103 |
g |
50 |
28 |
40 |
( |
150 |
68 |
104 |
h |
51 |
29 |
41 |
) |
151 |
69 |
105 |
i |
52 |
2a |
42 |
* |
152 |
6a |
106 |
j |
53 |
2b |
43 |
+ |
153 |
6b |
107 |
k |
54 |
2c |
44 |
, |
154 |
6c |
108 |
l |
55 |
2d |
45 |
- |
155 |
6d |
109 |
m |
56 |
2e |
46 |
. |
156 |
6e |
110 |
n |
57 |
2f |
47 |
/ |
157 |
6f |
111 |
o |
60 |
30 |
48 |
0 |
160 |
70 |
112 |
p |
61 |
31 |
49 |
1 |
161 |
71 |
113 |
q |
62 |
32 |
50 |
2 |
162 |
72 |
114 |
r |
63 |
33 |
51 |
3 |
163 |
73 |
115 |
s |
64 |
34 |
52 |
4 |
164 |
74 |
116 |
t |
65 |
35 |
53 |
5 |
165 |
75 |
117 |
u |
66 |
36 |
54 |
6 |
166 |
76 |
118 |
v |
67 |
37 |
55 |
7 |
167 |
77 |
119 |
w |
70 |
38 |
56 |
8 |
170 |
78 |
120 |
x |
71 |
39 |
57 |
9 |
171 |
79 |
121 |
y |
72 |
3a |
58 |
: |
172 |
7a |
122 |
z |
73 |
3b |
59 |
; |
173 |
7b |
123 |
{ |
74 |
3c |
60 |
< |
174 |
7c |
124 |
| |
75 |
3d |
61 |
= |
175 |
7d |
125 |
} |
76 |
3e |
62 |
> |
176 |
7e |
126 |
~ |
77 |
3f |
63 |
? |
177 |
7f |
127 |
del |
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时间: 2024-10-06 14:51:51