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calc/help/ferror
2017-05-21 15:38:36 -07:00

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NAME
ferror - determine if an error has occurred for file
SYNOPSIS
ferror(fd)
TYPES
fd file
return int
DESCRIPTION
This function determines whether the error condition was detected
while performing some operation on the file associated with fd.
The error need not have been the previous file operation.
If an error was previously reported 1 will be returned, otherwise
0 is returned.
EXAMPLE
> fd = fopen("/etc/motd", "r")
> ferror(fd)
0
LIMITS
fd must be associated with an open file
LIBRARY
none
SEE ALSO
errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt