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Annotation of researchv10dc/man/adm/man3/ungetc.3, revision 1.1.1.1

1.1       root        1: .TH UNGETC 3S
                      2: .CT 2 file_io
                      3: .SH NAME
                      4: ungetc \(mi push character back into input stream
                      5: .SH SYNOPSIS
                      6: .B #include <stdio.h>
                      7: .PP
                      8: .B ungetc(c, stream)
                      9: .br
                     10: .SM
                     11: .B FILE
                     12: .B *stream;
                     13: .SH DESCRIPTION
                     14: .I Ungetc
                     15: pushes the character
                     16: .I c
                     17: back on an input stream.
                     18: That character will be returned by the next
                     19: .I getc
                     20: call on that stream.
                     21: .I Ungetc
                     22: returns
                     23: .IR c .
                     24: .PP
                     25: One character of pushback is guaranteed provided
                     26: something has been read from the stream and the stream is
                     27: actually buffered.
                     28: Attempts to push
                     29: .B EOF
                     30: are rejected.
                     31: .SH "SEE ALSO"
                     32: .IR getc (3), 
                     33: .IR stdio (3), 
                     34: .IR fseek (3)
                     35: .SH DIAGNOSTICS
                     36: .I Ungetc
                     37: returns
                     38: .B EOF
                     39: if it can't push a character back.

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