Assignment 5 Cos(x), C (gcc)

Assignment 5 Cos(x)

//gcc 5.4.0
//CHANGE THE FACTORIAL, SO FAR IT IS INCREMENTING BY ONE STILL
#include  <stdio.h>
#include <math.h>
int main(void)
{
    int i;
    int final;
    int n;
    int j=0;
    int sum1=0;
    int answer1=0;
    int denom1=1;
    scanf("%d", &n);
    int pow1=2.0;
    for (i=0; i<n; i++, pow1++)
        {
            denom1=j*denom1;
            j++;
            j++;
            printf("denominator is %d\n", denom1);
            printf("Value of n and pow1 = %lf\n", pow(n, pow1));
            if ((pow1%4)==0.0)
                {
                sum1=(answer1/denom1)+sum1;
                }
            else{
                sum1=sum1-(answer1/denom1);
                }
            answer1=pow(n, pow1);
            pow1++;
        }

/*   for (i=1; i<=n; i++)
        {
            if (j<=n)
            {
                denom1=j*denom1;
                j++;
                
            }
            else
            {
                continue;
            }
        }
    printf("factorial of %d is %d\n", n, denom1);
    */
final=1-sum1;
printf("%d", final);
        return 0;
}


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