OS Exercise - Disk Scheduler

A simple C program which implements the disk scheduling algorithm including FCFS, SSTF, SCAN, CSCAN, LOOK and CLOOK.

Please choose your disk scheduling algorithm:
1. FCFS  - First Come First Serve
2. SSTF  - Shortest Seek Time First
3. SCAN  -
4. CSCAN - Circular Scan
5. LOOK  - Scan without moving to ends
6. CLOOK - Circular Look without moving to ends
Your choice is (1~6, other input means EXIT):
1

*** MAIN MENU *************************
0. Change Disk Schedule Algorithm - FCFS
1. Print Disk Scheduling Result
2. Input Disk Request to Device Queue
3. Exit
Please enter your choice (0~3):1
Process#   Tracks#
--------------------------
Current     53
     1      98 (+ 45=  45)
     2     183 (+ 85= 130)
     3      37 (+146= 276)
     4     122 (+ 85= 361)
     5      14 (+108= 469)
     6     124 (+110= 579)
     7      65 (+ 59= 638)
     8      67 (+  2= 640)
--------------------------
Total movement: 640 tracks

*** MAIN MENU *************************
0. Change Disk Schedule Algorithm - FCFS
1. Print Disk Scheduling Result
2. Input Disk Request to Device Queue
3. Exit
Please enter your choice (0~3):3
Terminated by user

Source Codes per request