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

#include
#include

main()
{
int counter, f_coun;
float sum = 0,x,power,fact;

printf("Enter the value of x\n");
scanf("%f",&x);

for(counter = 0,power = 0; power <=10;counter++,power = power+2)
{
fact = 1;
//printf("Counter Value = %d\n",counter);
for(f_coun = power; f_coun>=1 ; f_coun--)
fact *= f_coun;
sum += ( pow(-1,counter) * ( (pow(x,power) ) / fact ) ); // Equation of Sum Series
}
printf("%f\n",sum);

}