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  1. #include <algorithm>
  2. #include <functional>
  3. #include <iostream>
  4. #include <iterator>
  5. #include <numeric>
  6. #include <vector>
  7.  
  8. class A
  9. {
  10. 	public:
  11. 	int func()
  12. 	{
  13. 		std::cout<<"in A's func "<<std::endl;
  14. 		return 1;
  15. 	}
  16. };
  17.  
  18. class B : public A
  19. {
  20. 	public:
  21. 	bool func()
  22. 	{
  23. 		std::cout<<"in B's func "<<std::endl;
  24. 		return true;
  25. 	}	
  26. };
  27.  
  28. int main()
  29. {
  30.     std::vector<int> v(10, 2);
  31.     std::partial_sum(v.cbegin(), v.cend(), v.begin());
  32.     std::cout << "Among the numbers: ";
  33.     std::copy(v.cbegin(), v.cend(), std::ostream_iterator<int>(std::cout, " "));
  34.     std::cout << '\n';
  35.  
  36.     if (std::all_of(v.cbegin(), v.cend(), [](int i) { return i % 2 == 0; }))
  37.         std::cout << "All numbers are even\n";
  38.  
  39.         std::cout << "None of them are odd\n";
  40.  
  41.     struct DivisibleBy
  42.     {
  43.         const int d;
  44.         DivisibleBy(int n) : d(n) {}
  45.         bool operator()(int n) const { return n % d == 0; }
  46.     };
  47.  
  48.     if (std::any_of(v.cbegin(), v.cend(), DivisibleBy(7)))
  49.         std::cout << "At least one number is divisible by 7\n";
  50.  
  51.     A* a = new B();
  52.     a->func();
  53. }
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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Standard input is empty
stdout
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Among the numbers: 2 4 6 8 10 12 14 16 18 20 
All numbers are even
None of them are odd
At least one number is divisible by 7
in A's func
https://ideone.com/wZSBvj
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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