Priority.c

#include<stdio.h>
void main()
{
int p[20],bt[20],pri[20], wt[20],tat[20],i,k,n,temp; 
float wtavg,tatavg;
printf("Enter the number of processes --- ");
scanf("%d",&n);
for(i=0;i<n;i++){
p[i]=i;
printf("Enter the Burst Time & Priority of Process %d --- ",i); 
scanf("%d%d",&bt[i],&pri[i]);
}
for(i=0;i<n;i++)
for(k=i+1;k<n;k++)
if(pri[i]>pri[k]){
temp=p[i];
p[i]=p[k];
p[k]=temp;
temp=bt[i];
bt[i]=bt[k];
bt[k]=temp;
temp=pri[i];
pri[i]=pri[k];
pri[k]=temp;
}
wtavg=wt[0]=0;
tatavg=tat[0]=bt[0];
for(i=1;i<n;i++)
{
wt[i]=wt[i-1]+bt[i-1];
tat[i]=tat[i-1]+bt[i];
wtavg=wtavg+wt[i];
tatavg=tatavg+tat[i];
}
printf("\nPROCESS\t\tPRIORITY\tBURST TIME\tWAITING TIME\tTURNAROUNDTIME");
for(i=0;i<n;i++)
printf("\n%d \t\t %d \t\t %d \t\t %d \t\t %d ",p[i],pri[i],bt[i],wt[i],tat[i]);
printf("\nAverage Waiting Time is --- %f",wtavg/n); 
printf("\nAverageTurnaround Time is --- %f",tatavg/n);
}