Fcfsdisk. c

#include<stdio.h>

int main()

{

            int queue[20],n,head,i,j,k,seek=0,max,diff;

            float avg;

            printf("Enter the max range of disk\n");

            scanf("%d",&max);

            printf("Enter the size of queue request\n");

            scanf("%d",&n);

            printf("Enter the queue of disk positions to be read\n");

            for(i=1;i<=n;i++)

            scanf("%d",&queue[i]);

            printf("Enter the initial head position\n");

            scanf("%d",&head);

            queue[0]=head;

            for(j=0;j<=n-1;j++)

            {

                        diff=abs(queue[j+1]-queue[j]);

                        seek+=diff;

                        printf("Disk head moves from %d to %d with seek                                                                                       %d\n",queue[j],queue[j+1],diff);

            }

            printf("Total seek time is %d\n",seek);

            avg=seek/(float)n;

            printf("Average seek time is %f\n",avg);

            return 0;

}