C# - Classes

You saw a class structure in the “Hello, C# World!” sample. In the C#, you define a class by using the class keyword, just as you do in C++. Following the class keyword the class name and curly brackets ({. . .}), as shown here:

class Hello

{

static void Main()

{

Console.WriteLine("Hello, C# World!");

}

}

Note: C# classes don’t end semicolon (;) as C++.

Once a class is defined, you can add class members to it. Class members can include constants, fields, methods, properties, indexers, events, operators, instance constructors, static constructors, destructors, and nested type declarations. Each class member has an associated accessibility, which controls the scope of the member and defines whether these members are accessible outside the class. 

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Constructors......cont

Parameterized Constructors

A default constructor initilizes the data mambers of all objects with the same set of values. However, in practice, it may be necessary to initialize the various data elements of different objects with different values when they are created. Often you will allow users of your classes to pass arguments to the constructor. This can be achieved by passing arguments to constructor functions when the objects are created. Constructors that can take arguments are called Parameterized Constructors

For example, the default constructor number() may be modified as given below:

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Constructors

C++ provides mechanisms for ensuring that your objects are initialized properly before they are used. As your objects go in and out of scope, memory is first allotted to them and then initialized. C++ provides a special member function called the constructor for the initialization of an object.
A constructor function is called whenever an object is created. An object can be created as a global variable, as a local variable, through the explicit use of the new operator, though an explicit call of a constructor or as a temporary object. Constructors are called when an object is created as part of another object. LEARN MORE>>