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+'\" et
+.TH GETC "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+.\"
+.SH NAME
+getc
+\(em get a byte from a stream
+.SH SYNOPSIS
+.LP
+.nf
+#include <stdio.h>
+.P
+int getc(FILE *\fIstream\fP);
+.fi
+.SH DESCRIPTION
+The functionality described on this reference page is aligned with the
+ISO\ C standard. Any conflict between the requirements described here and the
+ISO\ C standard is unintentional. This volume of POSIX.1\(hy2017 defers to the ISO\ C standard.
+.P
+The
+\fIgetc\fR()
+function shall be equivalent to
+.IR "\fIfgetc\fR\^(\|)",
+except that if it is implemented as a macro it may evaluate
+.IR stream
+more than once, so the argument should never be an expression with
+side-effects.
+.SH "RETURN VALUE"
+Refer to
+.IR "\fIfgetc\fR\^(\|)".
+.SH ERRORS
+Refer to
+.IR "\fIfgetc\fR\^(\|)".
+.LP
+.IR "The following sections are informative."
+.SH EXAMPLES
+None.
+.SH "APPLICATION USAGE"
+If the integer value returned by
+\fIgetc\fR()
+is stored into a variable of type
+.BR char
+and then compared against the integer constant EOF, the comparison may
+never succeed, because sign-extension of a variable of type
+.BR char
+on widening to integer is implementation-defined.
+.P
+Since it may be implemented as a macro,
+\fIgetc\fR()
+may treat incorrectly a
+.IR stream
+argument with side-effects. In particular,
+.IR getc (* f \(pl\(pl)
+does not necessarily work as expected. Therefore, use of this function
+should be preceded by
+.BR \(dq#undef getc\(dq 
+in such situations;
+\fIfgetc\fR()
+could also be used.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "Section 2.5" ", " "Standard I/O Streams",
+.IR "\fIfgetc\fR\^(\|)"
+.P
+The Base Definitions volume of POSIX.1\(hy2017,
+.IR "\fB<stdio.h>\fP"
+.\"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1-2017, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, 2018 Edition,
+Copyright (C) 2018 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+In the event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .
+.PP
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .