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ferror(3) [osf1 man page]

ferror(3)						     Library Functions Manual							 ferror(3)

NAME
ferror - Tests the error indicator on a stream LIBRARY
Standard C Library (libc) SYNOPSIS
#include <stdio.h> int ferror( FILE *stream); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: ferror(): XSH5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Specifies the input or output stream. DESCRIPTION
The ferror() function tests whether input/output errors have occurred on the specified stream. NOTES
[Tru64 UNIX] The ferror() function may be a macro (depending on the compile-time definitions used in the source). Consequently, you can- not use this interface where a function is necessary; for example, a subroutine pointer cannot point to it. RETURN VALUES
If an I/O error occurred when reading from or writing to the stream specified by the stream parameter, a nonzero value is returned. Other- wise, a value of 0 (zero) is returned. RELATED INFORMATION
Functions: fopen(3), feof(3), fileno(3), clearerr(3) Standards: standards(5) delim off ferror(3)

Check Out this Related Man Page

clearerr(3)						     Library Functions Manual						       clearerr(3)

NAME
clearerr - Clears indicators on a stream LIBRARY
Standard C Library (libc) SYNOPSIS
#include <stdio.h> void clearerr( FILE *stream); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: clearerr(): XSH5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Specifies the input or output stream to be cleared. DESCRIPTION
The clearerr() function resets the error indicator and the EOF indicator for the stream specified by the stream parameter. NOTES
[Tru64 UNIX] The clearerr() function is supported for multithreaded applications. RETURN VALUES
The clearerr() function returns no value. RELATED INFORMATION
Functions: open(2), fopen(3), feof(3), fileno(3), ferror(3) Standards: standards(5) delim off clearerr(3)
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