Ошибкa в статическом массиве

#include <stdio.h>
#include <math.h>
#define MAX_DATA 11
using namespace std;
int main() {
    double a[MAX_DATA] = {0.3, 0.7, 0.9, 1.3, 1.7, 1.9, 2.3, 2.7, 2.9, 3.3, 3.7};
    double sum1 = 0, sum2 = 0, temp, s3;
    for (int i = 0; i < 4; i++) {
        temp = sin(fabs(1 - log(a[i])));
        sum1 += temp;
    }
    for (int i = 0; i < 10; i++) {
        temp = sin(18 * a[i] * a[i] * a[i]) * sin(18 * a[i] * a[i] * a[i]);
        sum2 += temp;
    }
    if (sum2 == 0) {
        printf("na nol delit nelzya");
    } else {
        s3 = sum1 / sum2;
    }
    printf("S3= %f, S3");
    return 0;
}