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POI think I'm confusing name hiding with function overriding
 

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  1. POI think I'm confusing name hiding with function overriding
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    <p>I'm confused...it seems that both things do the same thing.</p> <p>In this first code, I believe that the derived classes are hiding the function names of the base classes.</p> <pre><code>#include &lt;iostream&gt; using namespace std; class Quadrilateral { public: void greeting() { std::cout &lt;&lt; "i am a quadrilateral" &lt;&lt; std::endl; } }; class Square : public Quadrilateral { public: void greeting() { std::cout &lt;&lt; "i am a square" &lt;&lt; std::endl; } }; class Trapezoid : public Quadrilateral { public: void greeting() { //hides greeting from quadrilateral function std::cout &lt;&lt; "Hi I'm a Trapezoid" &lt;&lt; std::endl; } }; int main() { Trapezoid tz; tz.greeting(); } </code></pre> <p>This seems to have the same exact result: [here they are being overriden because it is virtual in the base class]</p> <pre><code>#include &lt;iostream&gt; using namespace std; class Quadrilateral { public: virtual void greeting() { std::cout &lt;&lt; "i am a quadrilateral" &lt;&lt; std::endl; } }; class Square : public Quadrilateral { public: void greeting() { std::cout &lt;&lt; "i am a square" &lt;&lt; std::endl; } }; class Trapezoid : public Quadrilateral { public: void greeting() { //hides greeting from quadrilateral function std::cout &lt;&lt; "Hi I'm a Trapezoid" &lt;&lt; std::endl; } }; int main() { Trapezoid tz; tz.greeting(); } </code></pre> <p>So I guess I'm just really confused as to...what is the difference? Or what is the point of making it virtual in the base class if it's just gonna have the same effect in this situation?</p>
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    1. COThe second doesn't hide it, but overrides it.
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      1. POI think I'm confusing name hiding with function overriding
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    2. COI know, but it seems to do the same thing whether you override it or hide it. So what's the point? @LuchianGrigore
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    3. COTry this in both cases: Make an instance of the derived class. Make a pointer to it with the type of the base class. Call the function on the base class pointer (which actually points to an instance of the derived class).
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