One of the important operations on binary tree’s is visiting every node in the tree. The operation must be efficient, accurate and should avoid visiting same nodes repetitively. There are three ways ideally to visit the nodes and each of them has specific sequence to visit nodes. If you see carefully names itself are given [...]
Continue reading → Windows application can be installed on Windows using Windows Installer or 3rd Party installer. MSI is a database file used by Windows Installer which runs as Windows Service. MSI contains different components like files, registry data, shortcuts etc. The GUI that used during installation is also the part of MSI. It also contains information about [...]
Continue reading → Multi threaded application requires the synchronization of resources to avoid issues related to resource sharing. One of the problem which occurs while using Windows API’s for synchronization is that in between lock and unlock statements if some exception occurs. Resource may get locked forever. This can be avoided with simply wrapping up the synchronization object [...]
Continue reading → Header annotations are added to many header files ( windows ). These are nothing but a way to specify how a function uses its parameters and returns value. This helps programmers to know if they are using Windows API in correct way. If you are using code analysis in Visual Studio then, you will see [...]
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Continue reading → sizeof operator is useful operator to get the size of type or variable( auto,pointer, array). Return value of sizeof operator is of type size_t. Its defined in the file file STDDEF.H. The advantage of using sizeof operator is, you dont need to specify the machine dependent data. 1. When a type is passed, it should be [...]
Continue reading → C# is programming language from Microsoft. How different is it from other languages provided by Microsoft, well its managed. If you remember even Microsoft has released a version of Java VJ++ after Sun Java became popular. However after the sued by Sun, Microsoft has stopped releasing any further version of Visual J++. But They come [...]
Continue reading → A HashMap is class of collection framework.It stores data in the form of name value pair.It provides number of methods.The size() is also a method of HashMap class.It returns the size of HashMap, size means total number of keys in HashMap.
Continue reading → There is certain situation when we need some code must be executed. While working with C++/windows, we have mechanism that makes sure that a specified code block will be executed at any cost. Even if there is a return or goto statement. This is very useful when you have resources to clean up. This is [...]
Continue reading → C++ compiler provides you four special functions to every class by default. 1. Default constructor Called while creation of object 2. Copy constructor This is called when a. an object is passed by value, void setFunction( MyClaa obj); b. an object is return by value. MyClass getFunction(); c. new object is created from existing object( [...]
Continue reading → This is another type of polymorphism also called as compile time polymorphism or static binding. Operator or function overloading essentially means having multiple functions or methods with same name. Operators are the special functions which carry out certain operation on operands, such as equating, comparison, addition, subtraction etc. We know various arithmetic operators, comparison, logical [...]
Continue reading → Polymorphism means same entity behaving differently at different times. Compile time polymorphism is also called as static binding. Compile time or static binding means Function body is bind to the function call at compile time itself. In C++ compile time polymorphism can be achieved using Function overloading and operator overloading. Function overloading Function overloading means, [...]
Continue reading → C++ program needs resources (variables/Objects) to do something. We can use normal objects created on Stack or we can allocate them dynamically on Heap memory. Constructor code is the guaranteed part which is executed while creating objects. Similarly destructor code is the guaranteed part gets executed when object goes out of scope. If an object [...]
Continue reading → To initialize an object of a class, we need a constructor. We can use default constructor provided by compiler or we can overload constructors or override zero argument constructor similar to default constructor. Constructor Ex. It does not have any argument. Unlike normal functions, it doesn’t return any value. Has same name as that of [...]
Continue reading → Prior to C++ programming or Object oriented programming; procedural languages such as C language were used. Procedural language program have typical structure where variables needs to be declared to hold data and functions need to be declared to operate on these variables. To share variables among various parts of program (or with number of functions) [...]
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