File: purevirtual.cc

package info (click to toggle)
c%2B%2B-annotations 7.2.0-1
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 11,484 kB
  • ctags: 2,902
  • sloc: cpp: 15,844; makefile: 2,997; ansic: 165; perl: 90; sh: 29
file content (48 lines) | stat: -rw-r--r-- 711 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
#include <iostream>

class Base
{
    public:
        virtual ~Base();
        virtual void pure() = 0;
};

inline Base::~Base()
{}

inline void Base::pure()
{
    std::cout << "Base::pure() called\n";
}

class Derived: public Base
{
    public:
        virtual void pure();
};

inline void Derived::pure()
{
    Base::pure();
    std::cout << "Derived::pure() called\n";
}

int main()
{
    Derived derived;

    derived.pure();
    derived.Base::pure();

    Derived *dp = &derived;

    dp->pure();
    dp->Base::pure();
}
// Output:
//      Base::pure() called
//      Derived::pure() called
//      Base::pure() called
//      Base::pure() called
//      Derived::pure() called
//      Base::pure() called