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POUnderstanding (simple?) C++ Inheritance
 

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    <p>I'm struggling a bit to understand why this code snippet does not compile.</p> <pre><code>#include &lt;cstdio&gt; class A { public: virtual int potential()=0; virtual int potential(int arg, int arg2)=0; }; class B : public A { public: int potential() { return 1; } virtual int potential(int arg, int arg2) { return 2; } }; class C : public B { public: int potential(int arg, int arg2) { return 3; } }; int main(int argc, char** argv) { C c; int value = c.potential(); printf("Got %i\n", value); return 0; } </code></pre> <p>I have two pure virtual methods, both named <code>potential</code> in the abstract superclass <code>A</code>. The subclass <code>B</code> then defines both, but a further subclass <code>C</code> only needs to redefine one of the methods.</p> <p>However, on compilation, only the method defined in <code>C</code> is recognized, and <code>potential()</code> isn't seen (this should have been inherited from <code>B</code>):</p> <pre><code>In function 'int main(int, char**)': Line 23: error: no matching function for call to 'C::potential()' compilation terminated due to -Wfatal-errors. </code></pre> <p>If I rename <code>A::potential(int, int)</code> to something else all the way down the inheritance tree, such as <code>A::somethingElse(int, int)</code>, then the code compiles fine, and the output is <code>Got 1</code>, as expected.</p> <p>This has been verified using <strong>clang</strong>, <strong>g++</strong> and MSVC's <strong>cl</strong>.</p> <p>Any ideas on what is going on?</p>
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    1. COUse `cstdio` in C++ plzkthx.
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    2. COUsing `<cstdio>` as suggested.
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