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  1. #include <iostream>
  2.  
  3. class MyClass
  4. {
  5.    public:
  6.  
  7.       MyClass (const bool select)
  8.       {
  9.          if (select)
  10.          {
  11.             speaker = &MyClass::foo;
  12.          }
  13.          else
  14.          {
  15.             speaker = &MyClass::bar;
  16.          }
  17.       }
  18.  
  19.       void speak() const
  20.       {
  21.          (this->*speaker)();
  22.       }
  23.  
  24.       void (MyClass::*speaker)() const;
  25.  
  26.    private:
  27.       void foo() const { std::cout << "Foo\n"; }
  28.       void bar() const { std::cout << "Bar\n"; }
  29. };
  30.  
  31. int main()
  32. {
  33.    MyClass m1(true);
  34.    MyClass m2(false);
  35.  
  36.    m1.speak();
  37.    m2.speak();
  38. }
  39.  
  40.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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Foo
Bar
https://ideone.com/MMtDEQ
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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