FibonacciRecursive.c

#include <stdio.h>

int fibonacci(int number) {
    if (number == 0) {
        return 0;
    } else if (number == 1) {
        return 1;
    } else {
        return fibonacci(number - 1) + fibonacci(number - 2);
    }
}

int main(void) {
    int test_nbr = 12;

    printf("recursive: %d\n", fibonacci(test_nbr));
    return 0;
}