Strrchr Example

Defined in header <string.h>
char *strrchr( const char *str, int ch );

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

#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

strchr	finds the first occurrence of a character (function)
strpbrk	finds the first location of any character in one string, in another string (function)