getc()

get character from stream 

Function

SYNOPSIS

#include <stdio.h>

int getc(FILE *stream);

DESCRIPTION

The getc() function, which gets a character from a stream, is identical to the fgetc() function. The getc() function obtains the next byte (if present) as an unsigned char converted to an int, from the input stream pointed to by stream, and then advances the associated file position indicator for the stream (if defined).

PARAMETERS

stream 

Points to the input stream.

RETURN VALUES

The getc() function returns the next character from the input stream pointed to by stream. If the stream is at the end of the file, the end-of-file indicator for the stream is set and getc() returns EOF. If a read error occurs, the error indicator for the stream is set and getc() returns EOF. The functions feof() and ferror() can be used to distinguish error conditions from EOF.

On failure, errno is set to one of the following values:

EACCES 

Another process has the file locked.

EBADF 

stream is not a valid stream opened for reading.

EINTR 

A signal interrupted the call.

EIO 

An input error occurred.

EISDIR 

The open object is a directory, rather than a file.

ENOMEM 

Memory could not be allocated for internal buffers.

ENXIO 

A device error occurred.

EOVERFLOW 

The file is a regular file and an attempt was made to read at or beyond the offset maximum associated with the corresponding stream.

EWOULDBLOCK 

The underlying file descriptor is a non-blocking socket and no data is ready to be read.

CONFORMANCE

ANSI/ISO 9899-1990.

MULTITHREAD SAFETY LEVEL

MT-Safe.

PORTING ISSUES

If the stream is from a file opened in text mode, the line-terminating character sequence carriage return plus linefeed is translated to linefeed. No such translation occurs for files opened in binary mode.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
feof(), ferror(), fgetc(), fopen(), getc_unlocked(), getchar(), getchar_unlocked(), gets(), getw()

PTC MKS Toolkit 10.4 Documentation Build 39.