program 8 os

[rishivarathan]

include

include

define MAX_QUEUE 100

int abs(int a) { return (a < 0) ? -a : a; }

int main() { int queue[MAX_QUEUE]; int head, num_requests, total_head_movement;

// get the number of requests and the initial head position
printf("Enter the number of requests: ");
scanf("%d", &num_requests);

printf("Enter the initial head position: ");
scanf("%d", &head);

// get the request queue
printf("Enter the request queue:\n");
for (int i = 0; i < num_requests; i++) {
    scanf("%d", &queue[i]);
}

// initialize total head movement to the initial head position
total_head_movement = abs(queue[0] - head);

// iterate through the request queue and calculate the head movement
for (int i = 1; i < num_requests; i++) {
    total_head_movement += abs(queue[i] - queue[i-1]);
}

// print the results
printf("Total head movement: %d\n", total_head_movement);
printf("Average head movement: %f\n", (float)total_head_movement / num_requests);

return 0;

}