OS SRTF

#include <stdio.h>

int main() 

{

int a[10],b[10],x[10],i,j,smallest,count=0,time,n;

double avg=0,tt=0,end;

 printf("enter the number of Processes:\n");

 scanf("%d",&n); 

printf("enter arrival time\n");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

printf("enter burst time\n");

for(i=0;i<n;i++)

scanf("%d",&b[i]); 

for(i=0;i<n;i++)

x[i]=b[i];

 b[9]=9999;

 

for(time=0;count!=n;time++)

{

 smallest=9;

 for(i=0;i<n;i++)

{

 if(a[i]<=time && b[i]<b[smallest] && b[i]>0 )

 smallest=i;

 }

 b[smallest]--;

 if(b[smallest]==0)

 {

 count++;

 end=time+1;

 avg=avg+end-a[smallest]-x[smallest];

 tt= tt+end-a[smallest];

 }

}

printf("\n\nAverage waiting time = %lf\n",avg/n);

 printf("Average Turnaround time = %lf",tt/n);

 return 0;

}