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C-/C++-Quelltext

#include <iostream>

unsigned int fibonacci(unsigned int n) {
    unsigned int values[2];
    values[0] = 0;
    values[1] = 1;
    for(unsigned int i = 2; i <= n; i++) {
        values[i % 2] = values[0] + values[1];
    }
    return values[n%2];
}

void print_nth_fibonacci(unsigned int n) {
    std::cout << fibonacci(n) << std::endl;
}

void print_fibonacci_range(unsigned int n) {
    for(unsigned int i = 0; i <= n; i++) {
        print_nth_fibonacci(i);
    }
}

int main() {
    unsigned int n = 42;
    unsigned int nth_fibonacci = fibonacci(n);

    std::cout << "Die " << n << "te Fibonacci-Zahl ist: " << nth_fibonacci << std::endl;
    print_fibonacci_range(13);
    return 0;
}