strpbrk
From cppreference.com
C
Concurrency support (C11)
Null-terminated byte strings
Functions
Character manipulation
Conversions to and from numeric formats
(C99)(C99)
(C99)(C99)
(C23)(C23)(C23)
String manipulation
String examination
Memory manipulation
Miscellaneous
(C11)(C11)
Defined in header
<string.h>
char *strpbrk( const char *dest, const char *breakset );
(1)
/*QChar*/ *strpbrk( /*QChar*/ *dest, const char *breakset );
(2)
(since C23)
1 ) Scans the null-terminated byte string pointed to by dest for any character from the null-terminated byte string pointed to by breakset, and returns a pointer to that character.
2) Type-generic function equivalent to (1). Let
T be an unqualified character object type.
- If
destis of type const T*, the return type is const char*. - Otherwise, if
destis of type T*, the return type is char*. - Otherwise, the behavior is undefined.
- If
The behavior is undefined if either dest or breakset is not a pointer to a null-terminated byte string.
[edit] Parameters
dest
-
pointer to the null-terminated byte string to be analyzed
breakset
-
pointer to the null-terminated byte string that contains the characters to search for
[edit] Return value
Pointer to the first character in dest, that is also in breakset, or null pointer if no such character exists.
[edit] Notes
The name stands for "string pointer break", because it returns a pointer to the first of the separator ("break") characters.
[edit] Example
Run this code
#include <stdio.h> #include <string.h> int main(void) { const char* str = "hello world, friend of mine!"; const char* sep = " ,!"; unsigned int cnt = 0; do { str = strpbrk(str, sep); // find separator if(str) str += strspn (str, sep); // skip separator ++cnt; // increment word count } while(str && *str); printf ("There are %u words\n", cnt); }
Output:
There are 5 words
[edit] References
- C23 standard (ISO/IEC 9899:2024):
- 7.24.5.4 The strpbrk function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.24.5.4 The strpbrk function (p: TBD)
- C11 standard (ISO/IEC 9899:2011):
- 7.24.5.4 The strpbrk function (p: 368)
- C99 standard (ISO/IEC 9899:1999):
- 7.21.5.4 The strpbrk function (p: 331)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.11.5.4 The strpbrk function
[edit] See also
returns the length of the maximum initial segment that consists
of only the characters not found in another byte string
(function) [edit]
of only the characters not found in another byte string
(function) [edit]
C++ documentation for strpbrk