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added ctype.h notation

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tomit4 2022-05-31 20:27:34 -07:00
parent 291f8fbd73
commit 8acf1fae9a
3 changed files with 13 additions and 240 deletions
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unix_programming_environment/ctype.txt Normal file
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----------------------------- Table 6.1 -----------------------------
isalpha(c) alphabetic: a-z A-Z
isupper(c) upper case: A-Z
islower(c) lower case: a-z
isdigit(c) digit: 0-9
isxdigit(c) hexadecimal digit: 0-9 a-f A-F
isalnum(c) alphabetic or digit
isspace(c) blank, tab, newline, vertical tab, formfeed, return
ispunct(c) not alphanumeric or control or space
isprint(c) printable: any graphic
iscntrl(c) control character: 0 <= c < 040 "" c == 0177
isascii(c) ASCII character: 0 <= c <= 0177