strrchr
From cppreference.com
| Defined in header <string.h>
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| char *strrchr( const char *str, int ch ); |
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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'.
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 <string.h> #include <stdio.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
- C11 standard (ISO/IEC 9899:2011):
- 7.24.5.5 The strrchr function (p: 368-369)
- C99 standard (ISO/IEC 9899:1999):
- 7.21.5.5 The strrchr function (p: 331)
- C89/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) | |
| C++ documentation for strrchr
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