1 CTYPE(3C) Standard C Library Functions CTYPE(3C)
2
3
4
5 NAME
6 ctype, isalpha, isalnum, isascii, isblank, iscntrl, isdigit, islower,
7 isprint, isspace, isupper, ispunct, isgraph, isxdigit, isalpha_l,
8 isalnum_l, isblank_l, iscntrl_l, isdigit_l, islower_l, isprint_l,
9 isspace_l, isupper_l, ispunct_l, isgraph_l isxdigit_l - character
10 handling
11
12 SYNOPSIS
13 #include <ctype.h>
14
15 int isalpha(int c);
16
17 int isalnum(int c);
18
19 int isascii(int c);
20
21 int isblank(int c);
22
23 int iscntrl(int c);
24
25 int isdigit(int c);
26
27 int isgraph(int c);
28
29 int islower(int c);
185
186 ATTRIBUTES
187 See attributes(5) for descriptions of the following attributes:
188
189 +--------------------+-----------------+
190 | ATTRIBUTE TYPE | ATTRIBUTE VALUE |
191 +--------------------+-----------------+
192 |CSI | Enabled |
193 +--------------------+-----------------+
194 |Interface Stability | Standard |
195 +--------------------+-----------------+
196 |MT-Level | MT-Safe |
197 +--------------------+-----------------+
198
199 SEE ALSO
200 newlocale(3C), setlocale(3C), uselocale(3C), stdio(3C), ascii(5),
201 environ(5), standards(5)
202
203
204
205 March 14, 2016 CTYPE(3C)
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1 CTYPE(3C) Standard C Library Functions CTYPE(3C)
2
3
4
5 NAME
6 ctype, isalpha, isalnum, isascii, isblank, iscntrl, isdigit, islower,
7 isprint, isspace, isupper, ispunct, isgraph, isxdigit, isalpha_l,
8 isalnum_l, isblank_l, iscntrl_l, isdigit_l, islower_l, isprint_l,
9 isspace_l, isupper_l, ispunct_l, isgraph_l, isxdigit_l - character
10 handling
11
12 SYNOPSIS
13 #include <ctype.h>
14
15 int isalpha(int c);
16
17 int isalnum(int c);
18
19 int isascii(int c);
20
21 int isblank(int c);
22
23 int iscntrl(int c);
24
25 int isdigit(int c);
26
27 int isgraph(int c);
28
29 int islower(int c);
185
186 ATTRIBUTES
187 See attributes(5) for descriptions of the following attributes:
188
189 +--------------------+-----------------+
190 | ATTRIBUTE TYPE | ATTRIBUTE VALUE |
191 +--------------------+-----------------+
192 |CSI | Enabled |
193 +--------------------+-----------------+
194 |Interface Stability | Standard |
195 +--------------------+-----------------+
196 |MT-Level | MT-Safe |
197 +--------------------+-----------------+
198
199 SEE ALSO
200 newlocale(3C), setlocale(3C), uselocale(3C), stdio(3C), ascii(5),
201 environ(5), standards(5)
202
203
204
205 August 20, 2019 CTYPE(3C)
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