_6c.priority.c

#include<stdio.h>
int main()
 {
  int burst_time[20], process[20], waiting_time[20], turnaround_time[20], priority[20];
  int i, j, limit, sum = 0, position, temp;
  float average_wait_time, average_turnaround_time;
  printf("Enter total number of processes: ");
  scanf("%d", &limit);
  printf("\nEnter burst time and priority for %d processes\n", limit);
  for(i = 0; i < limit; i++)
   {
     printf("\nProcess[%d]\n", i + 1);
     printf("Process Burst Time:\t");
     scanf("%d", &burst_time[i]);
     printf("Process Priority:\t");
     scanf("%d", &priority[i]);
     process[i] = i + 1;
   }
 for(i = 0; i < limit; i++)
  {
    position = i;
    for(j = i + 1; j < limit; j++)
     {
       if(priority[j] < priority[position])
        {
          position = j;
        }
     }
   temp = priority[i];
   priority[i] = priority[position];
   priority[position] = temp;
   temp = burst_time[i];
   burst_time[i] = burst_time[position];
   burst_time[position] = temp;
   temp = process[i];
   process[i] = process[position];
   process[position] = temp;
  }
 waiting_time[0] = 0;
 for(i = 1; i < limit; i++)
  {
    waiting_time[i] = 0;
    for(j = 0; j < i; j++)
     {
       waiting_time[i] = waiting_time[i] + burst_time[j];
     }
   sum = sum + waiting_time[i];
  }
 average_wait_time = sum / limit;
 sum = 0;
 printf("\nProcess ID   Burst Time  Waiting Time  Turnaround Time\n");
 for(i = 0; i < limit; i++)
  {
    turnaround_time[i] = burst_time[i] + waiting_time[i];
    sum = sum + turnaround_time[i];
    printf("\nProcess[%d]       %d            %d             %d\n", process[i], burst_time[i], waiting_time[i],
    turnaround_time[i]);
  }
 average_turnaround_time = sum / limit;
 printf("\nAverage Waiting Time: %f", average_wait_time);
 printf("\nAverage Turnaround Time: %f\n", average_turnaround_time);
 return 0;
}