斐波那契数列
太久没写代码了,今天看视频教程,谈到用非递归方法实现斐波那契数列,居然愣了一下,煞笔了……
#include<stdio.h> int fab(int a) { if(a<=2)return 1; int pre = 0; int cur = 1; for(int i=2;i<=a;i++) { int temp = pre; pre = cur ; cur = temp + pre; } return cur; } int main() { int a; //1 1 2 3 5 8 13 while(scanf("%d",&a)!=EOF){ printf("%d\n",fab(a)); } return 0; }