Softwareentwicklung in C++ - ASC

42
15.3 Funktionspointer 473
43 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
44 virtual uint32 anotherCalculatorMethod ( uint32 val )
45 {
46 return ( val + o f f s e t ) ;
47 }
48 } ;
49
50 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
51 /∗
52 ∗ AnotherCalcMethodCollection
53 ∗
54 ∗ j u s t a demo f o r polymorphism
55 ∗
56 ∗/
57
58 class AnotherCalcMethodCollection : public CalcMethodCollection
59 {
60 public :
61 AnotherCalcMethodCollection ( uint32 m u l t i p l i c a t o r , uint32 o f f s e t )
62 throw ( ) : CalcMethodCollection ( m u l t i p l i c a t o r , o f f s e t ) {}
63
64 virtual ˜ AnotherCalcMethodCollection ( )
65 throw( ) { }
66
67 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
68 virtual uint32 anotherCalculatorMethod ( uint32 val )
69 {
70 return ( val + ( 2 ∗ o f f s e t ) ) ;
71 }
72 } ;
73
74
75 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
76 int main ( int argc , char ∗ argv [ ] )
77 {
78 uint32 ( CalcMethodCollection : : ∗ calcFunction ) ( uint32 ) ;
79
80 CalcMethodCollection method collection1 ( 2 , 7 ) ;
81 AnotherCalcMethodCollection method collection2 ( 2 , 7 ) ;
82
83 calcFunction = &CalcMethodCollection : : aCalculatorMethod ;
84 cout