Comments on: C program for Round Robin

By: Iqraali

Iqraali — Sun, 22 Feb 2015 06:30:13 +0000

i dont know what is going here but this program is not correct for round robin scheduling… :/ this is simple calculation of waiting time and turn around time :/

By: Iqraali

Iqraali — Sun, 22 Feb 2015 06:29:54 +0000

i dont know what going here but this program is not correct for round robin scheduling… :/ this is simple calculation of waiting time and turn around time :/

By: balu

balu — Tue, 21 Oct 2014 09:16:57 +0000

In reply to Priyanka. o/p?

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By: Harshal

Harshal — Sun, 20 Feb 2011 15:45:38 +0000

#include
#include
#include
int t,n,s,bt[10],ct[10],ta[10],w[10],lat[10],wav,taav;
int allover()
{
for(int i=0;i0)
return 0;
return 1;
}
void select(int p)
{
w[p]+=t-lat[p];
if(ct[p]>=s)
{
ct[p]-=s;
t+=s;
}
else
{
t+=ct[p];
ct[p]=0;
}
if(ct[p]==0)
ta[p]=t;
lat[p]=t;
}
void main()
{
int p=0;t=0;taav=0;wav=0;
clrscr();
printf(“Enter the number of process : “);
scanf(“%d”,&n);
printf(“\n Enter the time slice : “);
scanf(“%d”,&s);
printf(“\nEnter the burst time of processes \n “);
for(int i=0;i {
printf("\n process %d : ",i+1);
scanf("%d",&bt[i]);
ct[i]=bt[i];
lat[i]=0;
}
while(!allover())
{
if(ct[p]!=0)
select(p);
p=(p+1)%n;
}
printf("\n\n Process Burst time Wait time Turn around \n\n");
for(i=0;i {
printf("\n %d\t\t%d\t\t%d\t\t%d",i+1,bt[i],w[i],ta[i]);
wav+=w[i];
taav+=ta[i];
}
wav/=n;
taav/=n;
printf("\n\nAverage waiting time : %d ",wav);
printf("\n\nAverage turn around time : %d ",taav);
getch();
}

By: manish bagwari

manish bagwari — Mon, 25 Oct 2010 13:48:36 +0000

sir this is static could u give me dynamic program for round robbin

By: Eric

Eric — Tue, 12 Oct 2010 01:55:51 +0000

Priyanka@: that program was already edited ?i mean it will run sir>

By: Priyanka

Priyanka — Tue, 01 Jun 2010 12:47:23 +0000

// A program of round robin algorithm

#include
#include
main ()
{
int p[10],wt[10], bt[10], tat[10], n, tq;
int i, count = 0, twt = 0, ttat = 0, temp, sq = 0;
float awt, atat;
clrscr ();
printf(“enter the no. of process=>”);
scanf(“%d”,&n);
printf(“\nenter process=>”);
for(i=0;i”);
for(i=0;i {
scanf("%d",&bt[i]);
p[i] = bt[i];
}
printf( "\n Enter time quantum : " );
scanf ( "%d", &tq );
while ( 1 )
{
for(i=0,count=0;itq )
p[i]=p[i]-tq;
else
if( p[i] >= 0 )
{
temp = p[i];
p[i] = 0;
}
sq=sq+temp;
tat[i]=sq;
}
if (n==count)
break;
}
for( i = 0; i < n; i++ )
{
wt [i] = tat[i] – bt[i];
twt=twt+wt[i];
ttat=ttat+tat[i];
}
awt =(float)twt/n;
atat=(float)ttat/n;
printf("p_no.\tP_bt\t p_wt\t p_tat\n" );
for(i=0;i printf("%d\t%d\t%d\t%d\n",i+1,bt[i],wt[i],tat[i]);
printf("total waiting time=%d\n avg waiting time=%f",twt,awt);
printf("\ntotal turnedaroundtime=%d\n avg turnedaround time=%f",ttat, atat);
getch();
}