Restaurant table system

The restaurant currently has 25 tables, 1 to 25.

The program will keep track of the number of people seated at each 
table.

The Maître d' (the person who in charge of seating people) checks 
to see what tables are available.

A menu is displayed with 4 choices.
New Table
Table Finished
Tables in Use
Tables Available

Each menu will use a function to handle it.

Use a constant to define the amount of tables in the restaraunt.

For tables in use, display the amount of people at the table.

When a new table is entered, display which tables are available.
If tables are available, display the numbers.
Ask for the table number and the number of people.
If there are no tables, display a message stating so.
Do not let someone occupy a table that already has people at it.

When they are finished at the table, select the table number and then
ask to confirm the table number before making the table available.