An algorithm is used to determine the admission prices for a local museum.

The pseudocode for this algorithm is shown below.

• The values for month are 1 = January, 2 = February ... 12 = December.
• The values for category represent visitor types: 1 = Child, 2 = Student, 3 = Standard Adult.

1 IF (month = 12) THEN
2     SEND ("Closed for maintenance") TO DISPLAY
3 ELSE
4     IF (month >= 6) AND (month <= 8) THEN
5         IF (category = 1) OR (category = 2) THEN
6             SEND ("£5.00") TO DISPLAY
7         ELSE
8             IF (category = 3) THEN
9                 SEND ("£12.00") TO DISPLAY
10            ELSE
11                SEND ("High season category error") TO DISPLAY
12            END IF
13        END IF
14    ELSE
15        IF (month >= 1) AND (month <= 11) THEN
16            IF (category = 1) OR (category = 2) THEN
17                SEND ("£3.00") TO DISPLAY
18            ELSE
19                IF (category = 3) THEN
20                    SEND ("£8.00") TO DISPLAY
21                ELSE
22                    SEND ("Low season category error") TO DISPLAY
23                END IF
24            END IF
25        ELSE
26            SEND ("Month error") TO DISPLAY
27        END IF
28    END IF
29 END IF