Can Overridden Functions in C Hide Overloaded Versions?

Overloading Overridden Functions in C

When encountering a problem where overloading of functions becomes hidden upon overriding a base class function, it is crucial to understand the inherent behavior of C 's inheritance model.

In the given example, when the bar class overrides the foo::a() function, it hides all overloaded versions of foo::a() within the bar class scope. This is not inherently wrong but rather by design.

To resolve this issue, the bar class can utilize the using declaration:

<code class="cpp">class bar : public foo {
  public:
    using foo::a;  // Bring all 'foo::a()' overloads into 'bar' scope
    ...
};</code>

The using declaration effectively imports all overloads of foo::a() into the bar class scope, allowing overloading to function properly.

However, it's important to consider the potential consequences. If existing code uses the foo class, the addition of new overloads through bar could affect its behavior or introduce ambiguity, leading to compile-time errors.

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