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		<title>C++/Function/Function Pointer - История изменений</title>
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		<updated>2026-04-10T07:57:22Z</updated>
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		<title> в 14:21, 25 мая 2010</title>
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				<updated>2010-05-25T14:21:06Z</updated>
		
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	<entry>
		<id>http://cppe.ru/index.php?title=C%2B%2B/Function/Function_Pointer&amp;diff=1556&amp;oldid=prev</id>
		<title>Admin: 1 версия:&amp;#32;Импорт контента...</title>
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				<updated>2010-05-25T10:27:21Z</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;==Assigning function pointers to overloaded functions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt; &lt;br /&gt;
#include &amp;lt;iostream&amp;gt;&lt;br /&gt;
using namespace std;&lt;br /&gt;
void space(int count) &lt;br /&gt;
{&lt;br /&gt;
  for( ; count; count--) &lt;br /&gt;
     cout &amp;lt;&amp;lt; &amp;quot; &amp;quot;;&lt;br /&gt;
}&lt;br /&gt;
void space(int count, char ch) &lt;br /&gt;
{&lt;br /&gt;
  for( ; count; count--) &lt;br /&gt;
     cout &amp;lt;&amp;lt; ch;&lt;br /&gt;
}&lt;br /&gt;
int main()&lt;br /&gt;
{&lt;br /&gt;
  void (*functionPointer1)(int);&lt;br /&gt;
  void (*functionPointer2)(int, char);&lt;br /&gt;
  functionPointer1 = space;                  // gets address of space(int)&lt;br /&gt;
  functionPointer2 = space;                  // gets address of space(int, char)&lt;br /&gt;
  functionPointer1(22);                      &lt;br /&gt;
  cout &amp;lt;&amp;lt; &amp;quot;|\n&amp;quot;;&lt;br /&gt;
  functionPointer2(30, &amp;quot;x&amp;quot;);                 &lt;br /&gt;
  cout &amp;lt;&amp;lt; &amp;quot;|\n&amp;quot;;&lt;br /&gt;
  return 0;&lt;br /&gt;
}&lt;br /&gt;
           &lt;br /&gt;
         &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Pointer for empty string==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt;  &lt;br /&gt;
#include &amp;lt;functional&amp;gt;&lt;br /&gt;
#include &amp;lt;algorithm&amp;gt;&lt;br /&gt;
#include &amp;lt;string&amp;gt;&lt;br /&gt;
#include &amp;lt;vector&amp;gt;&lt;br /&gt;
#include &amp;lt;iostream&amp;gt;&lt;br /&gt;
using namespace std;&lt;br /&gt;
void findEmptyString(const vector&amp;lt;string*&amp;gt;&amp;amp; strings)&lt;br /&gt;
{&lt;br /&gt;
  vector&amp;lt;string*&amp;gt;::const_iterator it = find_if(strings.begin(), strings.end(),mem_fun(&amp;amp;string::empty));&lt;br /&gt;
  if (it == strings.end()) {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;No empty strings!\n&amp;quot;;&lt;br /&gt;
  } else {&lt;br /&gt;
    cout &amp;lt;&amp;lt; &amp;quot;Empty string at position: &amp;quot; &amp;lt;&amp;lt; it - strings.begin() &amp;lt;&amp;lt; endl;&lt;br /&gt;
  }&lt;br /&gt;
}&lt;br /&gt;
int main(int argc, char **argv)&lt;br /&gt;
{&lt;br /&gt;
  vector&amp;lt;string *&amp;gt; myVector;&lt;br /&gt;
  string one = &amp;quot;blah&amp;quot;;&lt;br /&gt;
  string two = &amp;quot;&amp;quot;;&lt;br /&gt;
  myVector.push_back(&amp;amp;one);&lt;br /&gt;
  myVector.push_back(&amp;amp;one);&lt;br /&gt;
  myVector.push_back(&amp;amp;two);&lt;br /&gt;
  myVector.push_back(&amp;amp;one);&lt;br /&gt;
  findEmptyString(myVector);&lt;br /&gt;
  return (0);&lt;br /&gt;
}&lt;br /&gt;
  &lt;br /&gt;
    &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Pointers as Function Arguments==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
&amp;lt;source lang=&amp;quot;cpp&amp;quot;&amp;gt; &lt;br /&gt;
&lt;br /&gt;
#include &amp;lt;iostream&amp;gt;&lt;br /&gt;
using namespace std;&lt;br /&gt;
void assignValues(int[], int);&lt;br /&gt;
void displayValues(int[], int);&lt;br /&gt;
const int MAX = 3;&lt;br /&gt;
int main ()&lt;br /&gt;
{&lt;br /&gt;
   int testScore[MAX];&lt;br /&gt;
   assignValues(testScore, MAX);&lt;br /&gt;
   displayValues(testScore, MAX);  &lt;br /&gt;
   return 0;&lt;br /&gt;
}&lt;br /&gt;
void assignValues(int tests[], int num)&lt;br /&gt;
{&lt;br /&gt;
   for (int i = 0; i &amp;lt; num; i++)&lt;br /&gt;
   {&lt;br /&gt;
      cout &amp;lt;&amp;lt; &amp;quot;Enter test score #&amp;quot; &amp;lt;&amp;lt; i + 1 &amp;lt;&amp;lt; &amp;quot;: &amp;quot;;&lt;br /&gt;
      cin &amp;gt;&amp;gt; tests[i];&lt;br /&gt;
   }&lt;br /&gt;
}&lt;br /&gt;
void displayValues(int scores[], int elems)&lt;br /&gt;
{&lt;br /&gt;
 for (int i = 0; i &amp;lt; elems; i++)&lt;br /&gt;
   {&lt;br /&gt;
      cout &amp;lt;&amp;lt; &amp;quot;Test score #&amp;quot; &amp;lt;&amp;lt; i + 1 &amp;lt;&amp;lt; &amp;quot;: &amp;quot;&lt;br /&gt;
         &amp;lt;&amp;lt; scores[i] &amp;lt;&amp;lt; endl;&lt;br /&gt;
   }&lt;br /&gt;
}&lt;br /&gt;
           &lt;br /&gt;
         &lt;br /&gt;
  &amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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