FCFS

#include<stdio.h>

int main()

{
int i,j,sum=0,n; int
ar[20],tm[20];
int disk;
printf("enter number of location\t"); scanf("%d",&n);
printf("enter position of head\t"); scanf("%d",&disk);
printf("enter elements of disk queue\n");
for(i=0;i<n;i++)
{
scanf("%d",&ar[i]);
tm[i]=disk-ar[i];
if(tm[i]<0)
{
tm[i]=ar[i]-disk;
}
disk=ar[i];

sum=sum+tm[i];

}
/*for(i=0;i<n;i++)
{
printf("\n%d->",tm[i]);
} */
printf("\nmovement of total cylinders %d",sum); return
0;
}