数学趣题——兔子产仔问题

Fi = 1 (i =1), 2(i = 2), Fi-1 + F i-2 (i >= 3)

#include <stdio.h>

int Fib(int n)
{
    if (n == 1 || n == 2)
        return 1;
    else
        return Fib(n-1) + Fib(n-2);
}

int main()
{
    printf("one year the are %d pairs of rabbits\n", Fib(12));
    return 0;
}