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  1. #include <vector>
  2. #include <algorithm>
  3. #include <iostream>
  4.  
  5. int main()
  6. {
  7. 	std::vector<int> a = { 1,2,3,4,5,6,7 };
  8.  
  9. 	struct accu_t
  10. 	{
  11. 		int sum, product;
  12. 		static accu_t& handle(accu_t& a, int i)
  13. 		{
  14. 			a.sum+=i;
  15. 			a.product*=i;
  16. 			return a;
  17. 		}
  18. 	} accum = { 0, 1 };
  19.  
  20. 	accum = std::accumulate(a.begin(), a.end(), accum, &accu_t::handle);
  21.  
  22. 	std::cout << "sum: " << accum.sum << ", product: " << accum.product << std::endl;
  23.  
  24. 	return 0;
  25. }
  26.  
Success #stdin #stdout 0s 2960KB
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stdin
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Standard input is empty
stdout
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sum: 28, product: 5040
https://ideone.com/gfi2C
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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