7-27 兔子繁衍问题

 1 #include <stdio.h>
 2 
 3 int main(void)
 4 {
 5     int a, b;
 6     int t;
 7     int month;
 8     int amount;
 9 
10     scanf("%d", &amount);
11 
12     a = 0;
13     b = 1;      //初始化，第一个月有一对兔子
14     month = 1;
15     while (b < amount)
16     {
17         month++;
18         t = a + b;
19         a = b;
20         b = t;
21     }
22 
23     printf("%d\n", month);
24 
25     return 0;
26 }