View Code of Problem 48

#include<stdio.h>
int main()
{
  int i,n;
  scanf("%d",&n);
   double sum1=1,sum2=2,temp;
   double result=0;
  for(i=1;i<=n;i++)
  {
    result+=(sum2/sum1);
    temp=sum1;
    sum1=sum2;
    sum2=sum2+temp;
  }
  printf("%.6f",result);
  return 0;
}