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ungetc

From cppreference.com
< c | io
Defined in header <stdio.h>
int ungetc( int ch, FILE *stream );

Puts the character ch back to the given file stream.

[edit] Parameters

ch - character to be put back
stream - file stream to put the character back to

[edit] Return value

On success ch is returned.

On failure EOF is returned and the given stream remains unchanged.

[edit] See also

gets a character from a file stream
(function) [edit]