fcfs_disk.c

#include <stdio.h> 
int size = 8;
 
void FCFS(int arr[], int head)
{
    int seek_count = 0;
    int distance, cur_track;
 
    for (int i = 0; i < size; i++) {
        cur_track = arr[i];
 
        // calculate absolute distance
        distance = abs(cur_track - head);
 
        // increase the total count
        seek_count += distance;
 
        // accessed track is now new head
        head = cur_track;
    }
 
    printf("Total number of seek operations = %d\n",seek_count);
 
    // Seek sequence would be the same
    // as request array sequence
    printf("Seek Sequence is\n");
 
    for (int i = 0; i < size; i++) {
        printf("%d\n" ,arr[i]);
    }
}
 
// Driver code
int main()
{
 
    // request array
    int arr[] = { 176, 79, 34, 60, 92, 11, 41, 114 };
    int head = 50;
 
    FCFS(arr, head);
 
    return 0;
}