View Code of Problem 71

#include <stdio.h>
int main()
{
	int t,n;
	float sum=0,i,k,j;
	i=2.0;
	j=1.0;
	scanf("%d",&n);
	for (t=2;t<=n;t++)
	{
		k=i;
		i=i+j;
		j=k;
		sum=sum+i/j;
	}
	printf("%.2f",sum+2);
	return 0;
}