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strchr(3)
NAME
  index, rindex, strchr, strrchr - Search for character in string

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 );

LIBRARY
  Standard C Library (libc)

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
  s   Specifies the string to search.

  c   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 ('\0') 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.

SEE ALSO
  Functions: string(3), wcschr(3)

  Standards: standards(5)

Index for Section 3

Alphabetical listing for S

Top of page