1UNGETC(3S)                                                          UNGETC(3S)
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NAME

6       ungetc - push character back into input stream
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SYNOPSIS

9       #include <stdio.h>
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11       ungetc(c, stream)
12       FILE *stream;
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DESCRIPTION

15       Ungetc  pushes the character c back on an input stream.  That character
16       will be returned by the next getc call on that stream.  Ungetc  returns
17       c.
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19       One  character  of  pushback  is guaranteed provided something has been
20       read from the stream and the stream is actually buffered.  Attempts  to
21       push EOF are rejected.
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23       Fseek(3S) erases all memory of pushed back characters.
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SEE ALSO

26       getc(3S), setbuf(3S), fseek(3S)
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DIAGNOSTICS

29       Ungetc returns EOF if it can't push a character back.
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337th Edition                      May 15, 1985                       UNGETC(3S)