View Code of Problem 71

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n;
    scanf("%d",&n);
    float i,j,k,tmp,sum;
    i=1;j=2;sum=0;
    for (k=0;k<n;k++)
    {
        sum += j/i;
        tmp = i;
        i = j;
        j=j+tmp;

    }
    printf("%.2f\n",sum);
}