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 <print>
#include "fibo5.hpp"
int main()
{
// sequence of 20 Fibonacci numbers:
for (auto val : fibonacci(20)) {
std::cout << val << ' ';
}
std::cout << '\n';
// sequence of 1 Fibonacci number:
std::println("{}", fibonacci(1));
}