wcsrchr
From cppreference.com
| Defined in header <wchar.h>
|
||
| wchar_t *wcsrchr( const wchar_t *str, wchar_t ch ); |
(1) | (since C95) |
| /*QWchar_t*/ *wcsrchr( /*QWchar_t*/ *str, wchar_t ch ); |
(2) | (since C23) |
1) Finds the last occurrence of the wide character ch in the wide string pointed to by str.
2) Type-generic function equivalent to (1). Let
T be an unqualified wide character object type.
- If
stris of type const T*, the return type is const wchar_t*. - Otherwise, if
stris of type T*, the return type is wchar_t*. - Otherwise, the behavior is undefined.
- If
Parameters
| str | - | pointer to the null-terminated wide string to be analyzed |
| ch | - | wide character to search for |
Return value
Pointer to the found character in str, or a null pointer if no such character is found.
Example
Run this code
#include <locale.h> #include <stdio.h> #include <wchar.h> int main(void) { wchar_t arr[] = L"白猫 黒猫 кошки"; wchar_t *cat = wcsrchr(arr, L'猫'); wchar_t *dog = wcsrchr(arr, L'犬'); setlocale(LC_ALL, "en_US.utf8"); cat ? printf("The character 猫 found at position %td\n", cat - arr) : puts("The character 猫 not found"); dog ? printf("The character 犬 found at position %td\n", dog - arr) : puts("The character 犬 not found"); }
Output:
The character 猫 found at position 4 The character 犬 not found
References
- C23 standard (ISO/IEC 9899:2024):
- 7.31.4.6.4 The wcsrchr function (p: TBD)
- C17 standard (ISO/IEC 9899:2018):
- 7.29.4.5.4 The wcsrchr function (p: 318)
- C11 standard (ISO/IEC 9899:2011):
- 7.29.4.5.4 The wcsrchr function (p: 436)
- C99 standard (ISO/IEC 9899:1999):
- 7.24.4.5.4 The wcsrchr function (p: 382)
See also
| (C95) |
finds the first occurrence of a wide character in a wide string (function) |
| (C95) |
finds the first location of any wide character in one wide string, in another wide string (function) |
| C++ documentation for wcsrchr
| |