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ungetc

Syntax

 
#include <stdio.h>

int ungetc(int c, FILE *file);

Description

This function pushes c back into the file. You can only push back one character at a time.

Return Value

The pushed-back character, or EOF on error.

Portability

ANSI/ISO C C89; C99
POSIX 1003.2-1992; 1003.1-2001

Example

 
int q;
while (q = getc(stdin) != 'q');
ungetc(q);


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