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		<title>C Tutorial/Function/Variable Number of Arguments - История изменений</title>
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		<updated>2026-04-18T06:08:23Z</updated>
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		<id>http://www.cppe.ru/index.php?title=C_Tutorial/Function/Variable_Number_of_Arguments&amp;diff=3374&amp;oldid=prev</id>
		<title> в 14:21, 25 мая 2010</title>
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				<updated>2010-05-25T14:21:19Z</updated>
		
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 14:21, 25 мая 2010&lt;/td&gt;
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	<entry>
		<id>http://www.cppe.ru/index.php?title=C_Tutorial/Function/Variable_Number_of_Arguments&amp;diff=3375&amp;oldid=prev</id>
		<title>Admin: 1 версия:&amp;#32;Импорт контента...</title>
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				<updated>2010-05-25T10:32:12Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия: Импорт контента...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;==va_arg, va_copy, va_start, and va_end==&lt;br /&gt;
&lt;br /&gt;
Item&lt;br /&gt;
Value&lt;br /&gt;
Header file&lt;br /&gt;
stdarg.h&lt;br /&gt;
Declartion&lt;br /&gt;
type va_arg(va_list argptr, type);void va_copy(va_list target, va_list source);void va_end(va_list argptr);void va_start(va_list argptr, last_parm);&lt;br /&gt;
&amp;lt;p&amp;gt;Use va_arg(), va_start(), and va_end() macros together to pass a variable number of arguments to a&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;p&amp;gt;function.  For example, printf(). The type va_list is defined by &amp;lt;stdarg.h&amp;gt;.&amp;lt;/p&amp;gt;&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt;#include &amp;lt;stdio.h&amp;gt;&lt;br /&gt;
  #include &amp;lt;stdarg.h&amp;gt;&lt;br /&gt;
  double sum_series(int num, ...);&lt;br /&gt;
  /* Variable length argument example - sum a series. */&lt;br /&gt;
  int main(void)&lt;br /&gt;
  {&lt;br /&gt;
    double d;&lt;br /&gt;
    d = sum_series(5, 0.5, 0.25, 0.125, 0.0625, 0.03125);&lt;br /&gt;
    printf(&amp;quot;Sum of series is %f.\n&amp;quot;, d);&lt;br /&gt;
    return 0;&lt;br /&gt;
  }&lt;br /&gt;
  double sum_series(int num, ...)&lt;br /&gt;
  {&lt;br /&gt;
    double sum=0.0, t;&lt;br /&gt;
    va_list argptr;&lt;br /&gt;
    /* initialize argptr */&lt;br /&gt;
    va_start(argptr, num);&lt;br /&gt;
    /* sum the series */&lt;br /&gt;
    for( ; num; num--) {&lt;br /&gt;
      t = va_arg(argptr, double); /* get next argument */&lt;br /&gt;
      sum += t;&lt;br /&gt;
    }&lt;br /&gt;
    /* do orderly shutdown */&lt;br /&gt;
    va_end(argptr);&lt;br /&gt;
    return sum;&lt;br /&gt;
  }&amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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