assignment5, C (gcc)

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//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 even=0;
    int j=0;
    int sum1=0;
    int num1=0;
    int denom1=1;
    int realDenom1=0;
    scanf("%d", &n);
    int pow1=2;
    for (i=0; i<n; i++, pow1++)
        {
            j++;
            denom1=j*denom1;
            even++;
if(even%2==0){
                realDenom1=denom1;
                printf("denominator is %d\n", realDenom1);
             }
            if ((pow1%4)==0.0&&(even%2==0))
                {
                sum1=(num1/denom1)+sum1;
                }
           if ((pow1%4)==0.0&&(even%2==0))
                {
                sum1=sum1-(num1/denom1);
                }
            num1=pow(n, pow1);
            pow1++;
            
                        printf("Numerator is = %d\n", num1);
        }

/*   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("final is %d", final);
        return 0;
}

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Compilation time: 0.13 sec, absolute service time: 0,31 sec