strpbrk - cppreference.com (original) (raw)

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.

1. Type-generic function equivalent to (1). Let T be an unqualified character object type.

• If dest is of type const T*, the return type is const char*.
• Otherwise, if dest is of type T*, the return type is char*.
• Otherwise, the behavior is undefined.

If a macro definition of each of these generic functions is suppressed to access an actual function (e.g. if (strpbrk) or a function pointer is used), the actual function declaration (1) becomes visible.

The behavior is undefined if either dest or breakset is not a pointer to a null-terminated byte string.

[edit] Parameters

[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

#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:

[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] | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | finds the first occurrence of a character (function) [edit] | | | finds the next token in a byte string (function) [edit] | | |