Compiler Error CS0501

'member function' must declare a body because it is not marked abstract, extern, or partial

Nonabstract methods must have implementations.

The following sample generates CS0501:

// CS0501.cs  
// compile with: /target:library  
public class clx  
{  
   public void f();   // CS0501 declared but not defined  
   public void g() {}   // OK  
}