View Code of Problem 48

#include<stdio.h>
main()
{
	int i,n,a=1,b=2,temp;
	double sum;
	scanf("%d",&n);
	sum=b/a;
	for(i=1;i<n;i++)
	{
		temp=a+b;
		a=b;
		b=temp;
		sum+=(double)b/a;
	}
	printf("%.6f",sum);
}

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