Round Robin Program:

#include<stdio.h>

void main()

{

int b[10],a[10],n,c1[10],sum=0,w[10],q=0,c2=0,i,tt [10],bt[10];

float avgw=0,avgt=0;

printf("Enter no of process\n");

scanf("%d",&n);

printf("Enter Burst Time\n");

for(i=0;i<=n-1;i++)

{

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

}

printf("Enter Arrival Time\n");

for(i=0;i<=n-1;i++)

{

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

}

printf("Enter Quantum\n");

scanf("%d",&q);

for(i=0;i<=n-1;i++)

{

sum+=b[i];

c1[i]=0;w[i]=0;

bt[i]=b[i];tt[i]=0;

}

for(t=0;t<sum;t++)

     {

  for(i=0;i<n;i++)

  {

  if(b[i]>0 && a[i]<=c2)

  { 

if (b[i]>=q)

{

b[i]=b[i]-q;

c1[i]=c1[i]+q;

c2=c2+q;

}

        else

        {

      b[i]=b[i]-1;

c1[i]=c1[i]+1;

c2=c2+1;

}

}

if (b[i]==0 && c1[i]>0)

    {

w[i]=c2-c1[i]-a[i];

      c1[i]=0; 

    }

    }

}

printf("Waiting Time\t\tTurn Around Time");

for(x=0;x<=n-1;x++)

{

tt[x]=bt[x]+w[x];    

printf("%d\t\t%d\n",w[x],tt[x]);

avgt+=tt[x];         avgw+=w[x];

}

printf("Waiting Time = %f\n",avgw/n);

printf("Turn Around Time = %f\n",avgt/n);

}