fgetc, fgets, getc, getchar, ungetc - input of characters and strings
#include <stdio.h> int fgetc(FILE *stream); char * fgets (char * s, int size, FILE *stream); int getc(FILE *stream); int getchar(void); int ungetc(int c, FILE *stream);
fgetc() reads the next character from
stream and returns it as an
unsigned char cast to an
int, or EOF on end of file or error.
getchar() is equivalent to getc(
fgets() reads in at most one less than
size characters from
stream and stores them into the buffer pointed to by
s. Reading stops after an EOF or a newline. If a newline is read, it is stored into the buffer. A terminating null byte ('\0') is stored after the last character in the buffer.
c back to
stream, cast to
unsigned char, where it is available for subsequent read operations. Pushed-back characters will be returned in reverse order; only one pushback is guaranteed.
Calls to the functions described here can be mixed with each other and with calls to other input functions from the
stdio library for the same input stream.
For nonlocking counterparts, see unlocked_stdio(3).
s on success, and NULL on error or when end of file occurs while no characters have been read.
c on success, or EOF on error.
For an explanation of the terms used in this section, see attributes(7).
|fgetc(), fgets(), getc(),
POSIX.1-2001, POSIX.1-2008, C89, C99.
It is not advisable to mix calls to input functions from the
stdio library with low-level calls to read(2) for the file descriptor associated with the input stream; the results will be undefined and very probably not what you want.
This page is part of release 4.15 of the Linux
man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.