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<H2><A NAME="SECTION0024120000000000000000"></A><A NAME="msvcrt-console"></A>
<BR>
22.1.2 Console I/O 
</H2>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-5249' xml:id='l2h-5249' class="function">kbhit</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
  Return true if a keypress is waiting to be read.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-5250' xml:id='l2h-5250' class="function">getch</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
  Read a keypress and return the resulting character.  Nothing is
  echoed to the console.  This call will block if a keypress is not
  already available, but will not wait for <kbd>Enter</kbd> to be pressed.
  If the pressed key was a special function key, this will return
  <code>'&#92;000'</code> or <code>'&#92;xe0'</code>; the next call will return the
  keycode.  The <kbd>Control-C</kbd> keypress cannot be read with this
  function.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-5251' xml:id='l2h-5251' class="function">getche</tt></b>(</nobr></td>
  <td><var></var>)</td></tr></table></dt>
<dd>
  Similar to <tt class="function">getch()</tt>, but the keypress will be echoed if it 
  represents a printable character.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-5252' xml:id='l2h-5252' class="function">putch</tt></b>(</nobr></td>
  <td><var>char</var>)</td></tr></table></dt>
<dd>
  Print the character <var>char</var> to the console without buffering.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-5253' xml:id='l2h-5253' class="function">ungetch</tt></b>(</nobr></td>
  <td><var>char</var>)</td></tr></table></dt>
<dd>
  Cause the character <var>char</var> to be ``pushed back'' into the
  console buffer; it will be the next character read by
  <tt class="function">getch()</tt> or <tt class="function">getche()</tt>.
</dl>

<P>

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86530b38 AT	1	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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	54
	55	<H2><A NAME="SECTION0024120000000000000000"></A><A NAME="msvcrt-console"></A>
	56	<BR>
	57	22.1.2 Console I/O
	58	</H2>
	59
	60	<P>
	61	<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
	62	<td><nobr><b><tt id='l2h-5249' xml:id='l2h-5249' class="function">kbhit</tt></b>(</nobr></td>
	63	<td><var></var>)</td></tr></table></dt>
	64	<dd>
65	Return true if a keypress is waiting to be read.
66	</dl>
67
68	<P>
69	<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
70	<td><nobr><b><tt id='l2h-5250' xml:id='l2h-5250' class="function">getch</tt></b>(</nobr></td>
71	<td><var></var>)</td></tr></table></dt>
72	<dd>
73	Read a keypress and return the resulting character. Nothing is
74	echoed to the console. This call will block if a keypress is not
75	already available, but will not wait for <kbd>Enter</kbd> to be pressed.
76	If the pressed key was a special function key, this will return
77	<code>'\000'</code> or <code>'\xe0'</code>; the next call will return the
78	keycode. The <kbd>Control-C</kbd> keypress cannot be read with this
79	function.
80	</dl>
81
82	<P>
83	<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
84	<td><nobr><b><tt id='l2h-5251' xml:id='l2h-5251' class="function">getche</tt></b>(</nobr></td>
85	<td><var></var>)</td></tr></table></dt>
86	<dd>
87	Similar to <tt class="function">getch()</tt>, but the keypress will be echoed if it
88	represents a printable character.
89	</dl>
90
91	<P>
92	<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
93	<td><nobr><b><tt id='l2h-5252' xml:id='l2h-5252' class="function">putch</tt></b>(</nobr></td>
94	<td><var>char</var>)</td></tr></table></dt>
95	<dd>
96	Print the character <var>char</var> to the console without buffering.
97	</dl>
98
99	<P>
100	<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
101	<td><nobr><b><tt id='l2h-5253' xml:id='l2h-5253' class="function">ungetch</tt></b>(</nobr></td>
102	<td><var>char</var>)</td></tr></table></dt>
103	<dd>
104	Cause the character <var>char</var> to be ``pushed back'' into the
105	console buffer; it will be the next character read by
106	<tt class="function">getch()</tt> or <tt class="function">getche()</tt>.
107	</dl>
108
109	<P>
110
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