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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class A {
  5.  public:
  6.        virtual int Afunc() { return 2; };
  7.        int a;
  8. };
  9.  
  10. class B {
  11.  public: 
  12.       virtual int Bfunc() 
  13.       { 
  14.       	cout<<"this : "<<this<<endl;
  15.       	return 3; 
  16.       }
  17.       int b;
  18. };
  19.  
  20. // C is a single inheritance class, derives only from A
  21. class C: public A {
  22.  public: 
  23.      int Cfunc() { return 4; };
  24.      int c;
  25. };
  26.  
  27. // D uses multiple inheritance
  28. class D: public A, public B {
  29.  public: 
  30.     virtual int Dfunc() 
  31.     { 
  32.     	cout<<"this : "<<this<<endl;
  33.     	return 5; 
  34.     }
  35.     int d;
  36. };
  37.  
  38. int main() {
  39. 	// your code goes here
  40.  
  41. 	typedef int (D::*fptr)(void);
  42.  
  43. 	fptr bfunc;
  44. 	fptr dfunc;
  45.  
  46. 	bfunc=&D::Bfunc;
  47. 	dfunc=&D::Dfunc;
  48.  
  49. 	cout<<(reinterpret_cast<unsigned long long >(bfunc)&0xffffffffffffffff)<<endl;
  50. 	//cout<<(((void *)dfunc)&(0xffff0000))<<endl;
  51.  
  52. 	//(void*)(bfunc);
  53. 	return 0;
  54. }
Compilation error #stdin compilation error #stdout 0s 3456KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cpp: In function 'int main()':
prog.cpp:49:52: error: invalid cast from type 'fptr {aka int (D::*)()}' to type 'long long unsigned int'
  cout<<(reinterpret_cast<unsigned long long >(bfunc)&0xffffffffffffffff)<<endl;
                                                    ^
stdout
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Standard output is empty
https://ideone.com/wRVyTu
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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