1- x^2/2! +x^3/3!-.....

To Calculate The sum : 1- x^2/2! +x^3/3!-.....
#include <stdio.h>
#include <conio.h>
#include <math.h>

void main()

{
    float sum; int x;

    printf ("Please input x : ");

    scanf ("%d", &x);

    sum = 1- pow(x,2)/1*2 + pow(x,4)/6*4 - pow(x,6)/24*30 + pow (x,8)/24*30*56 - pow (x,10)/24*30*56*90;


    printf ("\nsum is %f",sum);
      getch();
}