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		<title>C Tutorial/Language/Global variables - История изменений</title>
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		<title> в 14:21, 25 мая 2010</title>
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				<updated>2010-05-25T14:21:19Z</updated>
		
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	<entry>
		<id>http://cppe.ru/index.php?title=C_Tutorial/Language/Global_variables&amp;diff=3847&amp;oldid=prev</id>
		<title>Admin: 1 версия:&amp;#32;Импорт контента...</title>
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				<updated>2010-05-25T10:32:43Z</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;==Declare global variables==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;p&amp;gt;A global variable is available to all functions in your program.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;p&amp;gt;A local variable is available only to the function in which it&amp;quot;s created.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;OL&amp;gt;&amp;lt;LI&amp;gt;Global variables are declared outside of any function.&amp;lt;/LI&amp;gt;&amp;lt;LI&amp;gt;Global variables are typically declared right before the main() function.&amp;lt;/LI&amp;gt;&amp;lt;LI&amp;gt;You can also declare a group of global variables at one time:&amp;lt;/LI&amp;gt;&amp;lt;/OL&amp;gt;&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt;int s,t;&amp;lt;/source&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Define and use Global variables==&lt;br /&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;
int count = 0;                         /* Declare a global variable   */&lt;br /&gt;
void test1(void){&lt;br /&gt;
  printf(&amp;quot;\ntest1   count = %d &amp;quot;, ++count);&lt;br /&gt;
}&lt;br /&gt;
void test2(void){&lt;br /&gt;
  static int count;                   /* This hides the global count */&lt;br /&gt;
  printf(&amp;quot;\ntest2   count = %d &amp;quot;, ++count);&lt;br /&gt;
}&lt;br /&gt;
&lt;br /&gt;
int main(void){&lt;br /&gt;
  int count = 0;                      /* This hides the global count */&lt;br /&gt;
  for( ; count &amp;lt; 5; count++) {&lt;br /&gt;
    test1();&lt;br /&gt;
    test2();&lt;br /&gt;
  }&lt;br /&gt;
  return 0;&lt;br /&gt;
}&amp;lt;/source&amp;gt;&lt;br /&gt;
&amp;lt;pre class=codeResult&amp;gt;value of i in main 0&lt;br /&gt;
     value of i after call 50&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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