Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Simulate an Elevator-Controller Program in C programming language.

The Elevator should be able to travel between five floors namely Ground, 1st, 2nd, 3rd, 4th and 5th floors. The elevator can travel going up (unless they are at the 5th floor) or going down (unless they are at the ground floor). The elevator can only containone passenger (which is the current user of the program). Initially the elevator begins and loads at the Ground Floor. If the user wants to travel to the 5th floor, the elevator shall go up to the said
floor. It is the option of the user if they want to alight the elevator or not on the 5th floor or any
floor on the way.Realistic rules should apply: If the user alights at the 4th floor, when they ride the elevator again, it should begin traveling from the 4th floor and from there choose to go up or down. 

It should have some validation,meaning, only the valid characters should be received by the program
(G, 1, 2, 3, 4, 5). If the user keys-in “A” or “-1”, the program should be able to handle such input and
not crash and ask for a correct valid input.
The elevator should also travel from B1 to B3 (Basement 1 to 3). The elevator can also allow new
passengers to ride the elevator during the trip of the first user. The number of passengers per trip
can vary. 

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