Calculate the Sum

Write a C program to calculate the following Sum:Sum=1-x2/2! +x4/4!-x6/6!+x8/8!-x10/10!*/

#include <stdio.h>

#include <math.h>

void main()

{

int counter,f_coun;

float sum=0,x,power,fact;

clrscr();

printf("<-----------------------PROGRAM FOR SUM OF EQ. SERIES----------------------->");

printf("\n\n\tEQUATION SERIES : 1- X^2/2! + X^4/4! - X^6/6! + X^8/8! - X^10/10!");

printf("\n\n\n\tENTER VALUE OF X : ");

scanf("%f",&x);

for(counter=0, power=0; power<=10; counter++,power=power+2)

{

fact=1;

//CALC FACTORIAL OF POWER VALUE

for(f_coun=power; f_coun>=1; f_coun--)

        fact *= f_coun;

//EQ. FOR SUM SERIES

sum=sum+(pow(-1,counter)*(pow(x,power)/fact));

}

printf("SUM : %f",sum);

getch();

}