Enter command: xyz
Unrecognized command!

Enter command: ai Tom Jones 123
Person Jones added

Enter command: ai Bill Jones 000
There is already a person with this last name!

Enter command: pi Bob
No person with that name!

Enter command: ar 1001
Room 1001 added

Enter command: ar 1001
There is already a room with this number!

Enter command: ar x1001
Could not read an integer value!

Enter command: ar -1001
Room number is not in range!

Enter command: am 1001 10 Silly_Stuff
Meeting added at 10

Enter command: am 1001 10 Important_Stuff
There is already a meeting at that time!

Enter command: am 1001 x10 Important_Stuff
Could not read an integer value!

Enter command: am 1001 6 Important_Stuff
Time is not in range!

Enter command: ap 1001 10 Bob
No person with that name!

Enter command: dp 1001 10 Bob
No person with that name!

Enter command: ap 1001 10 Jones
Participant Jones added

Enter command: ap 1001 10 Jones
This person is already a participant!

Enter command: dp 1001 10 Jones
Participant Jones deleted

Enter command: dp 1001 10 Jones
This person is not a participant in the meeting!

Enter command: ap 1001 10 Jones
Participant Jones added

Enter command: pm 1001 3
No meeting at that time!

Enter command: pm 1002 10
No room with that number!

Enter command: pr 23
No room with that number!

Enter command: ps
Information for 1 rooms:
--- Room 1001 ---
Meeting time: 10, Topic: Silly_Stuff
Participants:
Tom Jones 123

Enter command: dg
Cannot clear people list unless there are no meetings!

Enter command: di Jones
This person is a participant in a meeting!

Enter command: pgpspa
Information for 1 people:
Tom Jones 123

Enter command: Information for 1 rooms:
--- Room 1001 ---
Meeting time: 10, Topic: Silly_Stuff
Participants:
Tom Jones 123

Enter command: Memory allocations:
Persons: 1
Meetings: 1
Rooms: 1

Enter command: ld nonexistent_file.txt
Could not open file!

Enter command: pgpspa
Information for 1 people:
Tom Jones 123

Enter command: Information for 1 rooms:
--- Room 1001 ---
Meeting time: 10, Topic: Silly_Stuff
Participants:
Tom Jones 123

Enter command: Memory allocations:
Persons: 1
Meetings: 1
Rooms: 1

Enter command: ld normal_save1.txt
Data loaded

Enter command: ai William Wordsworth 555
Person Wordsworth added

Enter command: pgpspa
Information for 4 people:
Elton John 789
Tom Jones 123
Silas Marner 456
William Wordsworth 555

Enter command: Information for 2 rooms:
--- Room 1001 ---
Meeting time: 10, Topic: Music
Participants:
Elton John 789
Tom Jones 123
Meeting time: 2, Topic: Literature
Participants: None
--- Room 1002 ---
No meetings are scheduled

Enter command: Memory allocations:
Persons: 4
Meetings: 2
Rooms: 2

Enter command: ld invalid_file.txt
Invalid data found in file!

Enter command: pgpspa
Information for 4 people:
Elton John 789
Tom Jones 123
Silas Marner 456
William Wordsworth 555

Enter command: Information for 2 rooms:
--- Room 1001 ---
Meeting time: 10, Topic: Music
Participants:
Elton John 789
Tom Jones 123
Meeting time: 2, Topic: Literature
Participants: None
--- Room 1002 ---
No meetings are scheduled

Enter command: Memory allocations:
Persons: 4
Meetings: 2
Rooms: 2

Enter command: qq
All rooms and meetings deleted
All persons deleted
Done