strrchr(3) [osf1 man page]
strchr(3) Library Functions Manual strchr(3) NAME
index, rindex, strchr, strrchr - Search for character in string LIBRARY
Standard C Library (libc.so, libc.a) SYNOPSIS
#include <strings.h> char *index( const char *s, int c); char *rindex( const char *s, int c); #include <string.h> char *strchr( const char *s, int c); char *strrchr( const char *s, int c); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: index(), rindex(): XPG4-UNIX strchr(), strrchr(): XPG4, XPG4-UNIX Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Specifies the string to search. Specifies a character, expressed as an int data type, to search for. DESCRIPTION
The index() function locates the first occurrence of the integer specified by the c parameter, which is converted to an unsigned char, in the string pointed to by the s parameter. The terminating null byte is treated as part of the string pointed to by the s parameter. The rindex() function locates the last occurrence of the integer specified by the c parameter, which is converted to a char value, in the string pointed to by the s parameter. The terminating null byte is treated as a part of the string pointed to by the s parameter. The strchr() and strrchr() functions provide the same functionality as the index() and rindex() functions, respectively. If c is a null byte (' ') in any of these functions, the function locates the terminating null byte of s. RETURN VALUES
Upon successful completion, these functions return a pointer to the byte in the scanned string. When the byte specified by parameter c is not found, a null pointer is returned. RELATED INFORMATION
Functions: string(3), wcschr(3) Standards: standards(5) delim off strchr(3)
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STRCHR(3) Linux Programmer's Manual STRCHR(3) NAME
strchr, strrchr, strchrnul - locate character in string SYNOPSIS
#include <string.h> char *strchr(const char *s, int c); char *strrchr(const char *s, int c); #define _GNU_SOURCE /* See feature_test_macros(7) */ #include <string.h> char *strchrnul(const char *s, int c); DESCRIPTION
The strchr() function returns a pointer to the first occurrence of the character c in the string s. The strrchr() function returns a pointer to the last occurrence of the character c in the string s. The strchrnul() function is like strchr() except that if c is not found in s, then it returns a pointer to the null byte at the end of s, rather than NULL. Here "character" means "byte"; these functions do not work with wide or multibyte characters. RETURN VALUE
The strchr() and strrchr() functions return a pointer to the matched character or NULL if the character is not found. The terminating null byte is considered part of the string, so that if c is specified as ' ', these functions return a pointer to the terminator. The strchrnul() function returns a pointer to the matched character, or a pointer to the null byte at the end of s (i.e., s+strlen(s)) if the character is not found. VERSIONS
strchrnul() first appeared in glibc in version 2.1.1. CONFORMING TO
strchr() and strrchr() are in SVr4, 4.3BSD, C89, C99. strchrnul() is a GNU extension. SEE ALSO
index(3), memchr(3), rindex(3), string(3), strlen(3), strpbrk(3), strsep(3), strspn(3), strstr(3), strtok(3), wcschr(3), wcsrchr(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2012-04-24 STRCHR(3)