Hardware Reference
In-Depth Information
This is the
standard error
stream and is an output stream speci-
fically intended to receive error messages. By default is directed
to the standard output (like
stdout
), but it can be redirected to a
log file or any other output device.
stderr
A
stdio.h
stream is represented by a pointer to a
FILE
structure that contains
internal info about properties and indicators of a file. Normally data contained
in these structures is not referenced directly. When using
stdio.h
, pointers to
FILE
structures are used to pass parameters to I/O functions.
Stdio.h function summary
clearerr
Reset error indicators
fclose
Close a stream
feof
Check if End Of File (
EOF
) has been reached
ferror
Check for errors
fflush
Flush a stream
fgetc
Get next character from a stream
fgetpos
Get position in a stream
fgets
Get string from a stream
fopen
Open a file
fprintf
Print formatted data to a stream
fputc
Write character to a stream
fputchar
Write character to
stdout
fputs
Write string to a stream
fread
Read block of data from a stream
freopen
Reopen a file using a different file mode
fscanf
Read formatted data from a stream
fseek
Reposition stream's position indicator
fsetpos
Reposition file pointer to a saved location
ftell
Return the current position of the file pointer
fwrite
Write block of data to a stream
getc
Get the next character
getchar
Get the next character from
stdin
gets
Get a string from
stdin
getw
Get the next
int
value from a stream
perror
Print error message
printf
Print formatted data to
stdout
putc
Write character to a stream
putchar
Write character to
stdout
puts
Write a string to
stdout
putw
Write an integer to a stream
remove
Delete a file
rename
Rename a file or directory
rewind
Reposition file pointer to the beginning of a stream
Read formatted data from
stdin
scanf
Change stream buffering
setbuf
Change stream buffering
setvbuf
Format data to a string
sprintf
