int main() {
printf("Which Fibonacci number would you like to know? ");
int target;
scanf("%d", &target);
printf("The #%d Fibonacci number is %d\n", target, get_fib(target));
return 0;
}
int main()
{
printf("第0项fib值等于：%d\n",get_fib(0));
printf("第8项fib值等于：%d\n",get_fib(8));
printf("黄金分割比例近似等于：%lf\n",get_fib(40)*1.0/get_fib(41));
}