Expected expression before 'int'.

#include <stdio.h>
#include "lib_sort.h"

#define MAX_OF_INTS 1000

int compare(void* a, void* b)
{
    return (*(int*)a > *(int*)b)? 1 : (*(int*)a == *(int*)b)? 0 : -1;
}

int main(void)
{
    int i, n;
    int a[MAX_OF_INTS];
    scanf("%d", &n);
    for(i = 0; i < n; i++)
        scanf("%d", a+i);
    sort(a, a + ((n < MAX_OF_INTS)? n : MAX_OF_INTS), Sizeof(int), compare);
    return 0;
}