fork download
copy 
  1. #include <iostream>
  2. #include <numeric>
  3. #include <iterator>
  4. #include <vector>
  5. #include <functional>
  6.  
  7.  
  8. template<typename Container>
  9. std::string contents_as_string(Container const & c,
  10.                                std::string const & separator) {
  11.   if (c.size() == 0) return "";
  12.   auto fold_operation = [&separator] (std::string const & accum,
  13.                                       auto const & item) {
  14.     return accum + separator + std::to_string(item);};
  15.   return std::accumulate(std::next(std::begin(c)), std::end(c),
  16.                               std::to_string(*std::begin(c)), fold_operation);
  17. }
  18.  
  19. int main() {
  20.   std::vector<double> v(4);
  21.   std::iota(std::begin(v), std::end(v), 0.1);
  22.   std::cout << contents_as_string(v, ", ") << std::endl;
  23.  
  24.   std::vector<int> w(5);
  25.   std::iota(std::begin(w), std::end(w), 1);
  26.   std::cout << contents_as_string(w, " x ") << " = "
  27.     << std::accumulate(std::begin(w), std::end(w), 1, std::multiplies<int>{})
  28.     << std::endl;
  29. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
0.100000, 1.100000, 2.100000, 3.100000
1 x 2 x 3 x 4 x 5 = 120
https://ideone.com/Jtio12
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!