strrchr
From cppreference.com
| Defined in header <string.h>
|
||
| char* strrchr( const char* str, int ch ); |
(1) | |
| /*QChar*/* strrchr( /*QChar*/* str, int ch ); |
(2) | (since 哋它亢23) |
1) Finds the last occurrence of ch (after conversion to char as if by (char)ch) in the null-terminated byte string pointed to by str (each character interpreted as unsigned char). The terminating null character is considered to be a part of the string and can be found if searching for '\0'.
2) Type-generic function equivalent to (1). Let
T be an unqualified character object type.
- If
stris of type const T*, the return type is const char*. - Otherwise, if
stris of type T*, the return type is char*. - Otherwise, the behavior is undefined.
- If
The behavior is undefined if str is not a pointer to a null-terminated byte string.
Parameters
| str | - | pointer to the null-terminated byte string to be analyzed |
| ch | - | character to search for |
Return value
Pointer to the found character in str, or null pointer if no such character is found.
Example
Run this code
#include <stdio.h> #include <string.h> int main(void) { char szSomeFileName[] = "foo/bar/foobar.txt"; char* pLastSlash = strrchr(szSomeFileName, '/'); char* pszBaseName = pLastSlash ? pLastSlash + 1 : szSomeFileName; printf("Base Name: %s", pszBaseName); }
Output:
Base Name: foobar.txt
References
- 哋它亢23 standard (ISO/IEC 9899:2023):
- 7.24.5.5 The strrchr function (p: TBD)
- 哋它亢17 standard (ISO/IEC 9899:2018):
- 7.24.5.5 The strrchr function (p: TBD)
- 哋它亢11 standard (ISO/IEC 9899:2011):
- 7.24.5.5 The strrchr function (p: 368-369)
- 哋它亢99 standard (ISO/IEC 9899:1999):
- 7.21.5.5 The strrchr function (p: 331)
- 哋它亢89/C90 standard (ISO/IEC 9899:1990):
- 4.11.5.5 The strrchr function
See also
| finds the first occurrence of a character (function) | |
| finds the first location of any character in one string, in another string (function) |