void*array_getvalue(array_t*array, int nr) {
if(nr > array->num || nr<0) {
printf("error: reference to element %d in array[%d]\n", nr, array->num);
void*array_getvalue(array_t*array, int nr) {
if(nr > array->num || nr<0) {
printf("error: reference to element %d in array[%d]\n", nr, array->num);