锘??xml version="1.0" encoding="utf-8" standalone="yes"?>久久er国产精品免费观看8,99久久777色,久久国产乱子伦精品免费强http://www.shnenglu.com/foobar/zh-cnSat, 28 Jun 2025 12:42:13 GMTSat, 28 Jun 2025 12:42:13 GMT60Advanced Test in C: The 0x10 Best Questions for C Programmers http://www.shnenglu.com/foobar/archive/2007/12/03/37683.htmlfoobarfoobarMon, 03 Dec 2007 07:12:00 GMThttp://www.shnenglu.com/foobar/archive/2007/12/03/37683.htmlhttp://www.shnenglu.com/foobar/comments/37683.htmlhttp://www.shnenglu.com/foobar/archive/2007/12/03/37683.html#Feedback0http://www.shnenglu.com/foobar/comments/commentRss/37683.htmlhttp://www.shnenglu.com/foobar/services/trackbacks/37683.htmlAdvanced Test in C: The 0x10 Best Questions for C Programmers


foobar 2007-12-03 15:12 鍙戣〃璇勮
]]>
闅愯棌http://www.shnenglu.com/foobar/archive/2007/11/23/37221.htmlfoobarfoobarFri, 23 Nov 2007 12:44:00 GMThttp://www.shnenglu.com/foobar/archive/2007/11/23/37221.htmlhttp://www.shnenglu.com/foobar/comments/37221.htmlhttp://www.shnenglu.com/foobar/archive/2007/11/23/37221.html#Feedback0http://www.shnenglu.com/foobar/comments/commentRss/37221.htmlhttp://www.shnenglu.com/foobar/services/trackbacks/37221.html 

#include <iostream.h>
class Base
{
public:
virtual void f(float x){ cout << "Base::f(float) " << x << endl; }
void g(float x){ cout << "Base::g(float) " << x << endl; }
void h(float x){ cout << "Base::h(float) " << x << endl; }
};
class Derived : public Base
{
public:
virtual void f(float x){ cout << "Derived::f(float) " << x << endl; }
void g(int x){ cout << "Derived::g(int) " << x << endl; }
void h(float x){ cout << "Derived::h(float) " << x << endl; }
};

void main(void)
{
Derived d;
Base 
*pb = &d;
Derived 
*pd = &d;
// Good : behavior depends solely on type of the object
pb->f(3.14f); // Derived::f(float) 3.14
pd->f(3.14f); // Derived::f(float) 3.14
// Bad : behavior depends on type of the pointer
pb->g(3.14f); // Base::g(float) 3.14
pd->g(3.14f); // Derived::g(int) 3 (surprise!)
// Bad : behavior depends on type of the pointer
pb->h(3.14f); // Base::h(float) 3.14 (surprise!)
pd->h(3.14f); // Derived::h(float) 3.14
}

class Base
{
public:
void f(int x);
};
class Derived : public Base
{
public:
void f(char *str);
};
void Test(void)
{
Derived 
*pd = new Derived;
pd
->f(10); // error
//why?            
just imagine multiple inheritance
}


foobar 2007-11-23 20:44 鍙戣〃璇勮
]]>
闅愬紡綾誨瀷杞崲瀵艱嚧閲嶈澆鍑芥暟浜х敓浜屼箟鎬?/title><link>http://www.shnenglu.com/foobar/archive/2007/11/23/37220.html</link><dc:creator>foobar</dc:creator><author>foobar</author><pubDate>Fri, 23 Nov 2007 12:35:00 GMT</pubDate><guid>http://www.shnenglu.com/foobar/archive/2007/11/23/37220.html</guid><wfw:comment>http://www.shnenglu.com/foobar/comments/37220.html</wfw:comment><comments>http://www.shnenglu.com/foobar/archive/2007/11/23/37220.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/foobar/comments/commentRss/37220.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/foobar/services/trackbacks/37220.html</trackback:ping><description><![CDATA[<p> </p> <div style="BORDER-RIGHT: #cccccc 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #cccccc 1px solid; PADDING-LEFT: 4px; FONT-SIZE: 13px; PADDING-BOTTOM: 4px; BORDER-LEFT: #cccccc 1px solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: #cccccc 1px solid; BACKGROUND-COLOR: #eeeeee"><span style="COLOR: #008080"> 1</span> <span style="COLOR: #000000"># include </span><span style="COLOR: #000000"><</span><span style="COLOR: #000000">iostream.h</span><span style="COLOR: #000000">></span><span style="COLOR: #000000"><br></span><span style="COLOR: #008080"> 2</span> <span style="COLOR: #000000"></span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000"> output( </span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000"> x); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> 鍑芥暟澹版槑</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080"> 3</span> <span style="COLOR: #008000"></span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000"> output( </span><span style="COLOR: #0000ff">float</span><span style="COLOR: #000000"> x); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> 鍑芥暟澹版槑</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080"> 4</span> <span style="COLOR: #008000"></span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000"> output( </span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000"> x)<br></span><span style="COLOR: #008080"> 5</span> <span style="COLOR: #000000">{<br></span><span style="COLOR: #008080"> 6</span> <span style="COLOR: #000000">cout </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">"</span><span style="COLOR: #000000"> output int </span><span style="COLOR: #000000">"</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> x </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> endl ;<br></span><span style="COLOR: #008080"> 7</span> <span style="COLOR: #000000">}<br></span><span style="COLOR: #008080"> 8</span> <span style="COLOR: #000000"></span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000"> output( </span><span style="COLOR: #0000ff">float</span><span style="COLOR: #000000"> x)<br></span><span style="COLOR: #008080"> 9</span> <span style="COLOR: #000000">{<br></span><span style="COLOR: #008080">10</span> <span style="COLOR: #000000">cout </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">"</span><span style="COLOR: #000000"> output float </span><span style="COLOR: #000000">"</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> x </span><span style="COLOR: #000000"><<</span><span style="COLOR: #000000"> endl ;<br></span><span style="COLOR: #008080">11</span> <span style="COLOR: #000000">}<br></span><span style="COLOR: #008080">12</span> <span style="COLOR: #000000"></span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000"> main(</span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000">)<br></span><span style="COLOR: #008080">13</span> <span style="COLOR: #000000">{<br></span><span style="COLOR: #008080">14</span> <span style="COLOR: #000000"></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000"> x </span><span style="COLOR: #000000">=</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;<br></span><span style="COLOR: #008080">15</span> <span style="COLOR: #000000"></span><span style="COLOR: #0000ff">float</span><span style="COLOR: #000000"> y </span><span style="COLOR: #000000">=</span><span style="COLOR: #000000"> </span><span style="COLOR: #000000">1.0</span><span style="COLOR: #000000">;<br></span><span style="COLOR: #008080">16</span> <span style="COLOR: #000000">output(x); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output int 1</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080">17</span> <span style="COLOR: #008000"></span><span style="COLOR: #000000">output(y); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output float 1</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080">18</span> <span style="COLOR: #008000"></span><span style="COLOR: #000000">output(</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output int 1<br></span><span style="COLOR: #008080">19</span> <span style="COLOR: #008000"></span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output(0.5); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> error! ambiguous call, 鍥犱負鑷姩綾誨瀷杞崲</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080">20</span> <span style="COLOR: #008000"></span><span style="COLOR: #000000">output(</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">(</span><span style="COLOR: #000000">0.5</span><span style="COLOR: #000000">)); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output int 0</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080">21</span> <span style="COLOR: #008000"></span><span style="COLOR: #000000">output(</span><span style="COLOR: #0000ff">float</span><span style="COLOR: #000000">(</span><span style="COLOR: #000000">0.5</span><span style="COLOR: #000000">)); </span><span style="COLOR: #008000">//</span><span style="COLOR: #008000"> output float 0.5</span><span style="COLOR: #008000"><br></span><span style="COLOR: #008080">22</span> <span style="COLOR: #008000"></span><span style="COLOR: #000000">}</span></div> <img src ="http://www.shnenglu.com/foobar/aggbug/37220.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/foobar/" target="_blank">foobar</a> 2007-11-23 20:35 <a href="http://www.shnenglu.com/foobar/archive/2007/11/23/37220.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鏁扮粍閫鍖栦負鎸囬拡http://www.shnenglu.com/foobar/archive/2007/11/23/37218.htmlfoobarfoobarFri, 23 Nov 2007 12:22:00 GMThttp://www.shnenglu.com/foobar/archive/2007/11/23/37218.htmlhttp://www.shnenglu.com/foobar/comments/37218.htmlhttp://www.shnenglu.com/foobar/archive/2007/11/23/37218.html#Feedback0http://www.shnenglu.com/foobar/comments/commentRss/37218.htmlhttp://www.shnenglu.com/foobar/services/trackbacks/37218.html{
cout<< sizeof(a) << endl; // 4 瀛楄妭鑰屼笉鏄?00 瀛楄妭
}

foobar 2007-11-23 20:22 鍙戣〃璇勮
]]>
atexit -- function to be executed on exithttp://www.shnenglu.com/foobar/archive/2007/11/15/36729.htmlfoobarfoobarThu, 15 Nov 2007 15:47:00 GMThttp://www.shnenglu.com/foobar/archive/2007/11/15/36729.htmlhttp://www.shnenglu.com/foobar/comments/36729.htmlhttp://www.shnenglu.com/foobar/archive/2007/11/15/36729.html#Feedback0http://www.shnenglu.com/foobar/comments/commentRss/36729.htmlhttp://www.shnenglu.com/foobar/services/trackbacks/36729.html
int atexit ( void ( * function ) (void) );               <cstdlib>

 The function pointed by the function pointer argument is called when the program terminates normally.

If more than one atexit function has been specified by different calls to this function, they are all executed in reverse order as a stack, i.e. the last function specified is the first to be executed at exit.

One single function can be registered to be executed at exit more than once.

C++ implementations are required to support the registration of at least 32 atexit functions.

Parameters

function
Function to be called. The function has to return no value and accept no arguments.

Return Value

A zero value is returned if the function was successfully registered, or a non-zero value if it failed.

Example

/* atexit example */
            #include <stdio.h>
            #include <stdlib.h>
            void fnExit1 (void)
            {
            puts ("Exit function 1.");
            }
            void fnExit2 (void)
            {
            puts ("Exit function 2.");
            }
            int main ()
            {
            atexit (fnExit1);
            atexit (fnExit2);
            puts ("Main function.");
            return 0;
            }
            

Output:

            Main function.
Exit function 2.
Exit function 1.



foobar 2007-11-15 23:47 鍙戣〃璇勮
]]>
Gotchas in the C++ programing languagehttp://www.shnenglu.com/foobar/archive/2007/06/04/25442.htmlfoobarfoobarMon, 04 Jun 2007 03:11:00 GMThttp://www.shnenglu.com/foobar/archive/2007/06/04/25442.htmlhttp://www.shnenglu.com/foobar/comments/25442.htmlhttp://www.shnenglu.com/foobar/archive/2007/06/04/25442.html#Feedback0http://www.shnenglu.com/foobar/comments/commentRss/25442.htmlhttp://www.shnenglu.com/foobar/services/trackbacks/25442.htmlInitializer lists

In C++, it is the order of the class inheritance and of the member variables that determine the initialization order, not the order of an initializer list:



#include 
<iostream>

class CSomeClass
{
public:
CSomeClass(
int n)
{
std::cout 
<< "CSomeClass constructor with value ";
std::cout 
<< n << std::endl;
}

}
;

class CSomeOtherClass
{
public:
CSomeOtherClass() 
//In this example, despite the list order,
: obj2(2), obj1(1//obj1 will be initialized before obj2.
{
//Do nothing.
}

private:
CSomeClass obj1;
CSomeClass obj2;
}
;

int main(void)
{
CSomeOtherClass obj;
return 0;
}



foobar 2007-06-04 11:11 鍙戣〃璇勮
]]>
久久久久国产精品三级网| 欧美一区二区三区久久综合| 国产精自产拍久久久久久蜜| 久久国产成人| 亚洲中文字幕无码久久2017 | 亚洲成色999久久网站| 激情五月综合综合久久69| 久久久久精品国产亚洲AV无码 | 91精品国产高清久久久久久91| 一级做a爱片久久毛片| 性做久久久久久久久久久| 久久久久99精品成人片欧美| 国产成人精品久久亚洲高清不卡| 一本大道久久东京热无码AV| 狠狠干狠狠久久| 久久www免费人成看片| 精品无码久久久久久久动漫| 久久无码人妻一区二区三区| 欧美伊人久久大香线蕉综合69| 国产精品九九九久久九九| 久久亚洲中文字幕精品一区| 国产成人精品久久综合| 国内精品伊人久久久久| 亚洲熟妇无码另类久久久| 久久天天躁狠狠躁夜夜2020老熟妇 | 99久久精品免费国产大片| 麻豆亚洲AV永久无码精品久久| 亚洲国产精品狼友中文久久久| 国产香蕉97碰碰久久人人| 久久无码av三级| 久久国产乱子精品免费女| 69久久夜色精品国产69| 久久精品人人做人人爽电影蜜月| 偷偷做久久久久网站| 亚洲国产香蕉人人爽成AV片久久| 久久成人永久免费播放| 久久无码国产| 久久亚洲精品国产亚洲老地址| 国产精品中文久久久久久久| 伊人久久精品影院| 中文字幕日本人妻久久久免费|