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    <blockquote> <p>What is the difference between initiating a class and inheriting a class?</p> </blockquote> <p>First off, the word you're looking for is <strong>instantiate</strong>, not <strong>initiate</strong>. </p> <blockquote> <p>What is the difference between instantiating a class and inheriting a class?</p> </blockquote> <p><em>Inheritance</em> expresses the "is a kind of" relationship between two classes:</p> <ul> <li>The New York Times <em>is a kind of</em> newspaper.</li> <li>A giraffe <em>is a kind of</em> animal.</li> <li>An apple <em>is a kind of</em> fruit.</li> </ul> <p>In each of these cases the first kind of thing is the "more derived" type -- it is <em>more specific</em> -- and the second thing is the "less derived" type, or "base" type. It is <em>more general</em>. More things are fruits than are apples.</p> <p>In C# when you establish an inheritance relationship between two classes, you get two things:</p> <ul> <li>Assignment compatibility: you can use an expression of the more derived type where an expression of the base type is needed.</li> <li>Member inheritance: all methods, events, indexers, operators, fields, properties and nested types of the base class are automatically members of the derived class. (Constructors and destructors are not inheritable).</li> </ul> <p><em>Instantiation</em> is the process of making a new instance of a type. </p> <ul> <li>Here, let me give you a copy of today's New York Times.</li> <li>Here, let me give you a giraffe.</li> <li>Here, let me give you an apple.</li> </ul> <p>So in C#:</p> <pre><code>class Fruit {} class Apple : Fruit { } // Apple inherits from Fruit class Program { static void Main() { Apple apple = new Apple(); // Instantiating a new Apple } } </code></pre> <p>Make sense?</p>
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    1. USEric Lippert
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    1. COThankyou for the Giraffe, I will treasure it.
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      1. USJimmy Hoffa
    2. COYou might want to clarify that an inherited class is a _subset_ of the base class' instances, whereas an instantiated class is a _member_ of said set.
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