题目内容

有一分数序列：2/1，3/2，5/3，8/5，13/8，21/13......，求出这个数列的前20项之和。#includeintmain(){inti,n=20;floata=2,b=1,s=0,t;for(i=1;i<=n;i++){;;;;}printf("%f",s);}

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