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  1. #include <iostream>
  2.  
  3. #define CLASS(name)              \
  4.     virtual std::string className() {    \
  5.         return #name;            \     
  6.     }                           
  7.  
  8. class A {
  9. public:
  10.    CLASS(A) 
  11.  
  12.    A(){}
  13.    ~A(){}  
  14.  
  15.    void output() {
  16.        std::cout << className() << std::endl;
  17.    }
  18. };
  19.  
  20. class B: public A{
  21. public:
  22.    CLASS(B)
  23.    B(){}
  24.    ~B(){}
  25. };
  26.  
  27. int main() {
  28.    B b;
  29.    b.output();    // This obviously outputs "A" but I would
  30.                   // like it to output "B" from the base class
  31.                   // function
  32.    return 0;
  33. }
  34.  
Success #stdin #stdout 0.02s 2856KB
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stdin
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Standard input is empty
stdout
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B
https://ideone.com/Kr0Sc
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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