day_23/AoC_2020_23.cpp
bool is_label_in(cup* cup, const int label)
{
    for(; cup; cup = cup->next)
        if (label == cup->label)
            return true;
    return false;
}
// Verify if a label is in the linked list of cups.
// Note: linked list is not circular.
Verify if a label is in the linked list of cups.
Note: linked list is not circular.
Verify if a label is in the linked list of cups . Note : linked list is not circular .
bool is_label_in(cup* cup, const int label)
{
    for(; cup; cup = cup->next)
        if (label == cup->label)
            return true;
    return false;
}
bool is_label_in ( cup * cup , const int label ) { for ( ; cup ; cup = cup -> next ) if ( label == cup -> label ) return true ; return false ; }
Verify if a label is in the linked list of cups.
Verify if a label is in the linked list of cups .