Transferring array between functions using pointers, getting the size of array without using strlen

#include<stdio.h>
#include<string.h>
#define elements_count (sizeof(arr)/sizeof(arr[0]))

int compute_size(int arr[])
{
    return elements_count;
}
main()
{
    int list[]={11,12,13,14,15,16};
    int x,size;
    size=compute_size(list);
    for(x=0;x<size;x++)
    printf("%d",list[x]);
}