入门训练 BEGIN-4 Fibonacci数列 BEGIN-3 圆的面积 BEGIN-2 序列求和 BEGIN-1 A+B问题 BEGIN-4 Fibonacci数列 #include<iostream> using namespace std; int main() { int a = 1; int b = 1; int c = 0; int temp = 0; cin >> c; for (int i = 3; i <= c; i