View Code of Problem 48

#include<stdio.h>

int main()
{
   int n,k;
   double i,j,l,sum;
   i=1;j=2;
   scanf("%d",&n);
    for(k=0;k<n;k++)
    {
        sum+=j/i;
        l=i;
        i=j;
        j=l+j;
    }
    printf("%f",sum);

}