Modernes C++ programmieren

//#(execute) c++; compiler:g132; options:-O3 -std=c++23; libs:-
// https://godbolt.org/z/Tbx6qdrfx 
// modern102.cpp : Fibonacci-Konsole
#include <iostream>
#include <map>
int fib(int n) {
    static std::map<int, int> table{};
    table[n] = n<=1 ? n : table[n-2] + table[n-1];
    return table[n];
}
int main() {
    std::cout << "Wie viele Fibonacci-Zahlen? ";
    int n = 0;
    std::cin >> n;
    for (int i = 1; i <= n; ++i)
        std::cout << "fib(" << i << ")=" << fib(i) << "\n";
}