View Code of Problem 48

#include<stdio.h>
int main()
{
	int n;double result=2;double a[11]={1},b[11]={2};
	scanf("%d",&n);
	for(int i=1;i<n;i++)
	{
		a[i]=b[i-1];
		b[i]=a[i-1]+b[i-1];
		result+=b[i]/a[i];
	}
	printf("%.6lf",result);
 }