Push back the last character read from the console. There is a one-character buffer for the console. The next call to getch or getche will return the last character pushed before checking the keyboard buffer.

#include <conio.h>

int ungetch(int ch);

Remarks

If an attempt is made to push a second character before a call to getch is made, this function returns EOF.

Return Values

The value of the character pushed, or EOF if the buffer is full.

Requirements