The following code example is taken from the book
C++23 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2026
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include <iostream>
#include <ranges>
#include "fibo2.hpp"
int main()
{
// loop over first 20 values of the fibonacci() coroutine:
for (auto val : fibonacci() | std::views::take(20)) {
std::cout << val << ' ';
}
std::cout << '\n';
}