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2 Non-polymorphic classes

A non-polymorphic (static) class is one that has no virtual methods, inherited or otherwise. We can illustrate this with the following example:


Listing 1:Staticinheritance.
 
1class A 
2{ 
3  public: 
4    int i; 
5    void m1(void); 
6}; 
7 
8class B : public A 
9{ 
10  public: 
11    int j; 
12    void m1(void); 
13    void m2(void); 
14}; 
15 
16void test(void) 
17{ 
18  A myA; 
19  B myB; 
20 
21  myA.m1(); 
22  myB.m1(); 
23  myB.m2(); 
24  (static_cast<A *>(&myB))−>m1();  
25}

How are the method invocations implemented in the test subroutine?

 2.1 Equivalent C code
 2.2 Bottom line

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