summation, average, divisible by 5, 8 & both

#include<stdio.h>
#include<math.h>

int main()
{


    int n, i;
    double average, summation = 0;
    scanf("%d", &n);

    for(i = 1; i <= n; i++)
    {
        summation += i;//summation
        average = summation / n;// average

    }
    printf("summation = %.2lf\n", summation);
    printf("Average = %.2lf\n", average);

    for(i = 1; i <= n; i++)
    {
        if(i % 5 == 0  && i % 8 == 0)
        {
            printf("%d “Poopaye\n", i);// divisible by 5

        }else{
            if(i %5 == 0){
                printf("%d Bakayarou\n", i);
            }
            else if(i % 8 == 0){
                printf("%d Bananonina\n", i);
            }
        }
    }

    return 0;
}