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#include <stdio.h> 
#include <conio.h> 
main()
{
int i,j,n,tat[10],wt[10],bt[10],pid[10],pr[10],t,twt=0,ttat=0; float awt,atat;
printf("\n-----------PRIORITY SCHEDULING	\n");
printf("Enter the No of Process: "); scanf("%d", &n);
for (i=0;i<n;i++)
{
pid[i] = i;
printf("Enter the Burst time of Pid %d : ",i); scanf("%d",&bt[i]);
printf("Enter the Priority of Pid %d : ",i); scanf ("%d",&pr[i]);
}
for (i=0;i<n;i++) 
for(j=i+1;j<n;j++)
{
if (pr[i] > pr[j] )
{
t = pr[i]; 
pr[i] = pr[j]; 
pr[j] = t;
t = bt[i]; 
bt[i] = bt[j]; 
bt[j] = t;
t = pid[i]; 
pid[i] = pid[j];
pid[j] = t;
}
}





tat[0] = bt[0]; 
wt[0] = 0;
for (i=1;i<n;i++)
{
wt[i] = wt[i-1] + bt[i-1];
tat[i] = wt[i] + bt[i];
}
printf("\n 		\n"); printf("Pid\t Priority\tBurst time\t WaitingTime\tTurnArroundTime\n"); printf("\n 	-\n"); for(i=0;i<n;i++)
{
printf("\n%d\t\t%d\t%d\t\t%d\t\t%d",pid[i],pr[i],bt[i],wt[i],tat[i]);
}
for(i=0;i<n;i++)
{
ttat = ttat+tat[i]; 
twt = twt + wt[i];
}
awt = (float)twt / n; 
atat = (float)ttat / n;
printf("\n\nAvg.Waiting Time: %f\nAvg.Turn Around Time: %f\n",awt,atat); 
getch();
}