C program to find the sum of following series

Write a C program to find the sum of following series.

#include"stdio.h"

#include"conio.h"

#include"math.h"

int fact(int n)

{

  int i,f = 1;

  for(i = 1; i <= n; i++)

     f *= I;

  return f;

}

void main()

{

float x,sum = 1,t;

int i,n, sign = -1;

printf("Enter n,x values\n");

scanf("%d%f",&n,&x);

sum = 0.0;

for(i = 1; i <= n; i++)

{

     sum += (pow(x,i)/fact(i));

            }

            printf(“The  e^x is %f”, sum);

}