string(3)

1string(3)                  Library Functions Manual                  string(3)
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NAME

6       stpcpy,  strcasecmp,  strcat, strchr, strcmp, strcoll, strcpy, strcspn,
7       strdup, strfry, strlen, strncat, strncmp, strncpy,  strncasecmp,  strp‐
8       brk,  strrchr, strsep, strspn, strstr, strtok, strxfrm, index, rindex -
9       string operations
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LIBRARY

12       Standard C library (libc, -lc)
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SYNOPSIS

15       #include <strings.h>
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17       int strcasecmp(const char *s1, const char *s2);
18              Compare the strings s1 and s2 ignoring case.
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20       int strncasecmp(const char s1[.n], const char s2[.n], size_t n);
21              Compare the first n bytes of the  strings  s1  and  s2  ignoring
22              case.
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24       char *index(const char *s, int c);
25              Identical to strchr(3).
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27       char *rindex(const char *s, int c);
28              Identical to strrchr(3).
29
30       #include <string.h>
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32       char *stpcpy(char *restrict dest, const char *restrict src);
33              Copy  a  string from src to dest, returning a pointer to the end
34              of the resulting string at dest.
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36       char *strcat(char *restrict dest, const char *restrict src);
37              Append the string src to the string dest,  returning  a  pointer
38              dest.
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40       char *strchr(const char *s, int c);
41              Return  a  pointer to the first occurrence of the character c in
42              the string s.
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44       int strcmp(const char *s1, const char *s2);
45              Compare the strings s1 with s2.
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47       int strcoll(const char *s1, const char *s2);
48              Compare the strings s1 with s2 using the current locale.
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50       char *strcpy(char *restrict dest, const char *restrict src);
51              Copy the string src to dest, returning a pointer to the start of
52              dest.
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54       size_t strcspn(const char *s, const char *reject);
55              Calculate  the  length  of  the  initial segment of the string s
56              which does not contain any of bytes in the string reject,
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58       char *strdup(const char *s);
59              Return a duplicate of the string s  in  memory  allocated  using
60              malloc(3).
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62       char *strfry(char *string);
63              Randomly swap the characters in string.
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65       size_t strlen(const char *s);
66              Return the length of the string s.
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68       char *strncat(char dest[restrict strlen(.dest) + .n + 1],
69                     const char src[restrict .n],
70                     size_t n);
71              Append  at  most n bytes from the unterminated string src to the
72              string dest, returning a pointer to dest.
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74       int strncmp(const char s1[.n], const char s2[.n], size_t n);
75              Compare at most n bytes of the strings s1 and s2.
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77       char *strpbrk(const char *s, const char *accept);
78              Return a pointer to the first occurrence in the string s of  one
79              of the bytes in the string accept.
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81       char *strrchr(const char *s, int c);
82              Return  a  pointer  to the last occurrence of the character c in
83              the string s.
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85       char *strsep(char **restrict stringp, const char *restrict delim);
86              Extract the initial token in stringp that is delimited by one of
87              the bytes in delim.
88
89       size_t strspn(const char *s, const char *accept);
90              Calculate  the  length  of  the starting segment in the string s
91              that consists entirely of bytes in accept.
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93       char *strstr(const char *haystack, const char *needle);
94              Find the first occurrence of the substring needle in the  string
95              haystack, returning a pointer to the found substring.
96
97       char *strtok(char *restrict s, const char *restrict delim);
98              Extract  tokens  from  the string s that are delimited by one of
99              the bytes in delim.
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101       size_t strxfrm(char dest[restrict .n], const char src[restrict .n],
102                      size_t n);
103              Transforms src to the current locale  and  copies  the  first  n
104              bytes to dest.
105
106   Obsolete functions
107       char *strncpy(char dest[restrict .n], const char src[restrict .n],
108                     size_t n);
109              Copy  at  most  n  bytes  from  string  src to dest, returning a
110              pointer to the start of dest.
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DESCRIPTION

113       The string functions perform  operations  on  null-terminated  strings.
114       See the individual man pages for descriptions of each function.
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NAME

LIBRARY

SYNOPSIS

DESCRIPTION

SEE ALSO