#include<iostream>
using namespace std;
int main(){
float sum = 0;
float fm = 2;
float fz =1;
float temp;
for(int i=1;i<=20;i++){
sum +=fz/fm;
temp = fz;
fz = fm + fz;
fm = temp;
}
cout<<"和为"<<sum<<endl;
}
谭浩强c++第3章21题 有一分数列2/1, 3/2, 5/3, 8/5, 13/8, 21/13, ···求出这个数列的前20项之和。
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转载自blog.csdn.net/qq_42192641/article/details/104990126
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