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 ('