OS FCFS Disk Scheduling Algorithm

Program Name	Write a C Program for Operating System FCFS(First come first serve) Disk Scheduling Algorithm
Theory	In FCFS(First come first serve) the requests are served in the order they arrive in the disk queue.
Program	#include<stdio.h> #include<stdlib.h> void main() { int requests[100],i,n,TotalHeadMoment=0,initial; printf("Enter Number of Requests:"); scanf("%d",&n); printf("\nEnter the Requests Sequence:"); for(i=0;i<n;i++) scanf("%d",&requests[i]); printf("\nEnter Initial Head Position:"); scanf("%d",&initial); //FCFS disk scheduling logic for(i=0;i<n;i++) { TotalHeadMoment=TotalHeadMoment+abs(requests[i]-initial); initial=requests[i]; } printf("Total Head Moment: %d",TotalHeadMoment); }
Input	Enter Number of Requests:8 Enter the Requests Sequence:95 180 34 119 11 123 62 64 Enter Initial Head Position:50
Output	Total Head Moment: 644

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