#include <iostream>
#include <functional>
 
class DailyActivity {
  public:
    explicit DailyActivity(std::function<void ()> f) : m_function(f) {}
    void run() { m_function(); }
 
  private:
    std::function<void ()> m_function;
};
 
void function1() { std::cout << "function1\n"; }
void function2(int i) { std::cout << "function2 :" << i << std::endl; }
 
 
int main() {
	DailyActivity activity1(&function1);
	DailyActivity activity2([](){function2(1);});
 
	activity1.run();
	activity2.run();
}

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