class FixedQueue implements ICharQ {
    private char q[];
    private int putloc, getloc;

    public FixedQueue(int size) {
        q = new char[size+1];
        putloc = getloc = 0;
    }

    @Override
    public void put(char ch) {
        if(putloc == q.length-1){
            System.out.println(" - Queue is full.");
            return;
        }

        putloc++;
        q[putloc] = ch;
    }

    @Override
    public char get() {
        if(getloc == putloc) {
            System.out.println(" - Queue is full.");
            return (char) 0;
        }

        getloc++;
        return q[getloc];
    }
}