Introduction Data input validation in Windows Forms is essential. Built-in validation doesn't go much further than an enforcable maximum length for textboxes, but there are some nice methods you can use to make validation a breeze. When a user is
Data abstraction and encapsulation:Encapsulation: conceiling of the implementationdetails of a data object from the outside world.Abstraction: theseperation between the specificationof a data object and its implementation.data type is a collection
Notice that in C++, suppose we have a class whose name is Damn, then the code:Damn d;does not equal Damn *d = new Damn();The second code refers to initiate a new instance for Damn pointer d.But "Damn d;" automatically initiate a instance for the
一個典型的 C++ 程式員成長經曆:1. 完整的學一遍 C++ 所有語言特性,典型書籍 "The C++ Programming Language" Part1, Part2, "C++ Primer" 感覺 C++ 像大雜燴(多編程範型),各種精妙的文法特性 (friend, virtual/RTTI, const/mutable, exception, template),太多精妙的東西容易導致記憶瑣碎化,學了又忘了,尤其是那些很少用的部分 實踐:編寫一些帶 class 和
windows下編譯wxwidgets、boost並加入到codeblocks路徑中去 (visual c++ 2008/mingw32)編譯wxwidgets1、到官網下載源碼包(MSW),安裝到 X:\wxwidgets-x.x.xxx2、安裝visual c++ express 2008或者安裝mingw32(建議到下載http://tdm-gcc.tdragon.net/,會自動添加環境變數) 3、用VC內建的控制台(不能用系統的,系統控制台因未配置環境變數而出現錯誤“0xc0000
windows下編譯wxwidgets、boost並加入到codeblocks路徑中去 (visual c++ 2008/mingw32)編譯wxwidgets1、到官網下載源碼包(MSW),安裝到 X:\wxwidgets-x.x.xxx2、安裝visual c++ express 2008或者安裝mingw32(建議到下載http://tdm-gcc.tdragon.net/,會自動添加環境變數)3、用VC內建的控制台(不能用系統的,系統控制台因未配置環境變數而出現錯誤“0xc000013
[摘要]在分析病毒機理的基礎上,用C語言寫了一個小病毒作為執行個體,用TURBOC2.0實現. [Abstract] This paper introduce the charateristic of the computer virus,then show a simple example written by TURBOC2.0.一、什麼是病毒 惡意軟體可能是第一個對我們產生影響的電腦安全問題.所以病毒在資訊安全中是很重要的. 我們要對付病毒,就要瞭解病毒.