#include<stdio.h>

struct priority_scheduling
{
   char process;
   int bt,wt,tat,priority;
};


int main()
{
    int no_of_process;
    int total =0;
    struct priority_scheduling temp_process;
    int ASCII_number = 65;
    int position;
    float average_waiting_time;
    float average_turnaround_time;
    printf("Enter the number of processes:");
    scanf("%d",&no_of_process);
    struct priority_scheduling process[no_of_process];
    printf("Please enter the bt and priority of each process\n");
    for(int i=0;i<no_of_process;i++)
    {
	process[i].process = (char) ASCII_number;
        printf("Enter the details of the process %c \n",process[i].process);
         printf("enter the bt :");
         scanf("%d",&process[i].bt);
        printf("enter the priority :");
        scanf("%d",&process[i].priority);
        ASCII_number;
    }
    for(int i=0;i<no_of_process;i++)
    {
      position = i;
      for(int j=i+1;j<no_of_process;j++)
     {
	if(process[j].priority > process[position].priority)
        {
		position = j;
	}
    }
    

  temp_process = process[i];
  process[i] = process[position];
  process[position] = temp_process;
}
    process[0].wt = 0;
  for(int i=0;i<no_of_process;i++)
  {
    process[i].wt = 0;
    for(int j=0;j<i;j++)
    {
       process[i].wt += process[j].bt; 
    }
      total += process[i].wt;
  }
average_waiting_time = (float) total / (float) no_of_process;
total =0;
printf("\n process name \t BT \t WT \t TAT \n");
for(int i=0;i<no_of_process;i++)
{
  process[i].tat = process[i].bt = process[i].wt;
  total =  process[i].tat;
  printf("\t %c \t %d \t %d \t %d \n",process[i].process,process[i].bt,process[i].wt,process[i].tat);
}
average_turnaround_time = (float)total/ (float) no_of_process;
printf("Average WT %f\n",average_waiting_time);
printf("Average TAT : %f",average_turnaround_time );
return 0;


}