Calculating Sum of a series F(x) = 1 + 2/x + 3/x^2 + 4/x^3 +...

Problem Statement
For a function F(x),

     F(x) = 1 + 2/x + 3/x2 + 4/x3 +...
write a c program to print terms of this series
then calculate sum of all the terms

#include<stdio.h>
float evaluatefun(float x,float n);
int main()
{
  float x,n,y;
  printf("enter the value of x and n resp. \n");
  scanf("%f %f",&x,&n);
  y=evaluatefun(x,n);
  printf("\n the value of sum is %f \n",y);
  return 0;
}
float evaluatefun(float x,float n)
{
  float sum,i,term;     
  term=1.0;
  sum=1.0;
  printf("terms are 1.0 ");
  for(i=2.0;i<=n;i++)
    {
      term=term*i/((i-1)*x);
      printf(" %f",term);
      sum=sum+term;
    }
  return sum;
}