#include<stdio.h> #include<string.h> int main(){ int n; scanf("%d",&n); double sum=0; int t; double a[2]; a[0]=1,a[1]=2; for(int i=0;i<n;i++){ sum=sum+a[1]/a[0]; t=a[1]+a[0]; a[0]=a[1]; a[1]=t; } printf("%f\n",sum); } |
Double click to view unformatted code.