// fig14_01.cpp
// Lambda expressions.
#include <algorithm>
#include <array>
#include <iostream>
#include <iterator>

int main() {
   std::array values{1, 2, 3, 4}; // initialize values
   std::ostream_iterator<int> output{std::cout, " "};

   std::cout << "values contains: ";
   std::ranges::copy(values, output);

   // output each element multiplied by two
   std::cout << "\nDisplay each element multiplied by two: ";
   std::ranges::for_each(values, [](auto i) {std::cout << i * 2 << " ";});

   // add each element to sum
   int sum{0}; // initialize sum to zero
   std::ranges::for_each(values, [&sum](auto i) {sum += i;});
   std::cout << "\nSum of value's elements is: " << sum << "\n";
}


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