Sum of even Fibonacci numbers below 4M

#include <stdio.h>
#define LEN 40
#define MAX 4000000

int even(unsigned long num) {
    return num % 2 == 0 ? 1 : 0;
}

int main(void) {
    unsigned long fibs[LEN] = {1,1};
    unsigned long i, num=0, soma=0;
    for(i=2; i<LEN; ++i) {
        fibs[i] = fibs[i-2] + fibs[i-1];
    }
    i = 0;
    for(i=0; fibs[i] <= MAX; ++i) soma += even(fibs[i]) ? fibs[i] : 0;
    printf("%lu", soma);
    getchar();  /* pause for Windows... */
    return 0;
}