The C Standard Library - stdio.h

int

int character

Writes the specified character to stdout

char *

char *str, int num, FILE *stream

Reads no more than (num - 1) characters from the specified stream and puts them into the string pointed by str; when a newline character is reached, it is put into the string and the reading process terminates

int

FILE *stream

Reads a character from the specified file stream and returns it

int

FILE *stream

Same as the above, but may be defined as a macro rather than a function

long

FILE *stream

Returns the position of the file pointer relative to the start of the file

int

const char *format, ...

Writes formatted output, as specified by the format string, to stdout

int

FILE *stream

Closes the file associated with the specified stream

FILE *

(no parameters)

Creates a temporary file whose name is guaranteed to be different from that of any existing file; returns a pointer to that file

int

FILE *stream

Returns a non-zero value if the end-of-file has been reached for the specified file stream; returns zero otherwise

int

const char *format, ...

Reads formatted input from stdin

int

FILE *stream, const char *format, ...

Writes formatted output, as specified by the format string, to the specified file stream

int

const char *str

Writes the specified string and a newline character to stdout

int

const char *filename

Deletes the file of the specified name

int

(no parameters)

Reads a character from stdin and returns it

FILE *

const char *filename, const char *mode

Opens a file of the specified name in the specified mode; returns a pointer to that file