View Code of Problem 71

#include<stdio.h>
int main()
{
	int n;
	float i=1,j=1,a=1,sum = 0.0;
	scanf("%d",&n);
	while(n--)
	{
		i+=a;
		a=j;
		sum+=i/j;
		j=i;	
	} 
	printf("%.2f",sum);
	return 0;
}