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  1. #include <iostream>
  2.  
  3. class base {
  4.        virtual void time_impl()=0;
  5.   public:
  6.        void time() {
  7.              //Default behaviour
  8.              std::cout << "Hello ";
  9.              //Call overridden behaviour
  10.              time_impl();
  11.        }
  12.   };
  13.  
  14.   class child : public base {
  15.        void time_impl() {
  16.            std::cout << "world\n";
  17.        }
  18.   };
  19.  
  20.   int main () {
  21.       child c;
  22.       c.time();
  23.   }
Success #stdin #stdout 0s 2884KB
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stdin
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Standard input is empty
stdout
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Hello world
https://ideone.com/eZBpyX
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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