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  1. #include <stdlib.h>
  2. #include <list>
  3. #include <iostream>
  4. #include <sstream>
  5.  
  6. class summator{
  7.  
  8. 	std::list<int> vars;
  9.  
  10. public:
  11. 	summator& operator << (int o)
  12. 	{
  13. 		vars.push_back(o);
  14. 		return *this;
  15. 	}
  16.  
  17. 	summator& operator << (const char *o)
  18. 	{
  19. 		vars.push_back(atoi(o));
  20. 		return *this;
  21. 	}
  22.  
  23.  
  24. 	summator& operator << ( summator & (*f)( summator & ) )
  25. 	{
  26. 		(*f)( *this );
  27. 		return *this;
  28. 	}
  29.  
  30. 	static summator& calc (summator& o)
  31. 	{
  32. 		int sum = 0;
  33. 		while(!o.vars.empty()){
  34. 			sum += o.vars.front();
  35. 			o.vars.pop_front();
  36. 		}
  37. 		std::cout << "sum = " << sum;
  38. 		return o;
  39. 	}
  40. };
  41.  
  42.  
  43.  
  44.  
  45. int main(int argc, char* argv[])
  46. {
  47. 	summator sum;
  48. 	sum << 1 << 2 << "3" << summator::calc;
  49. 	return 0;
  50. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin 
Standard input is empty
stdout 
sum = 6
https://ideone.com/phSsHX
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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