ungetc man page on Ultrix

ungetc man page on Ultrix

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ungetc(3s)							    ungetc(3s)

Name
       ungetc - push character back into input stream

Syntax
       #include <stdio.h>

       ungetc(c, stream)
       FILE *stream;

Description
       The routine pushes the character c back on an input stream.  That char‐
       acter will be returned by the next call on that	stream.	  The  routine
       returns c.  One character of pushback is guaranteed in all cases.

       The routine erases all memory of pushed back characters.

Diagnostics
       The routine returns EOF if it cannot push a character back.

Environment
       In POSIX mode, the file's EOF indicator is cleared.

See Also
       fseek(3s), getc(3s), setbuf(3s)

								    ungetc(3s)

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