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perror(3)
NAME
  perror - Write a message explaining the current setting of errno

SYNOPSIS
  #include <stdio.h>

  void perror(
	  const char *string );

LIBRARY
  Standard C Library (libc)

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  perror():  ISO C, POSIX.1, XPG4, XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  string
      Points to a string containing the name of the program that caused the
      error.

DESCRIPTION
  The perror() function writes a message on the standard error stream that
  describes the current setting of the external variable errno. The error
  message includes the string pointed to by the string parameter, followed by
  a : (colon), a blank, the system message string, and a newline character.
  The string parameter string should point to the name of the program that
  caused the error.

  To get the system error message string for use by a program, as opposed to
  displaying it on standard error, use the strerror() function. For more
  information, see strerror(3).

SEE ALSO
  Routines: printf(3), strerror(3)

  Standards: standards(5)

Index for Section 3

Alphabetical listing for P

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