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#include<stdio.h>int f(int n){ int result = 0; if(n<=2) result = 1; else result=f(n-1)+f(n-2); return result;}int main(){ int n; printf("请输入月份:\n"); scanf("%d",&n); printf("第个%d月的兔子总量为:%d\n",n,f(n)); return 0;}