I'm getting an error saying `no return for this function`.
This function is supposed to return the number of even numbers in an array.

```
int even (int a[],int size){
int a;
for(a=0; a< size; a++)
{
    if (abcdef[a] % 2 == 0)
    {
        printf("%d", abcdef[a]);
    }
    return 0;
}

```