Round robin.c

           #include<stdio.h>
            main()
    { 
                int i,j,n,bu[10],wa[10],tat[10],t,ct[10],max;
               float awt=0,att=0,temp=0;
            clrscr();
                      printf("Enter the no of processes -- ");
                      scanf("%d",&n);
      for(i=0;i<n;i++)
           { 
                 printf("\nEnter Burst Time for process %d -- ", i+1);
                 scanf("%d",&bu[i]);
                 ct[i]=bu[i];
         }
printf("\nEnter the size of time slice -- ");
 scanf("%d",&t);
 max=bu[0];
 for(i=1;i<n;i++)
           if(max<bu[i])
                   max=bu[i]; 
           for(j=0;j<(max/t)+1;j++) 
            for(i=0;i<n;i++)  	 
               if(bu[i]!=0)
                if(bu[i]<=t)
                          { 
                                        tat[i]=temp+bu[i];
                                        temp=temp+bu[i];
                                          bu[i]=0;
                               } 
                                      else 
                                  {
                                              bu[i]=bu[i]-t;
                                            temp=temp+t;
                                   }
for(i=0;i<n;i++)  
        {
               wa[i]=tat[i]-ct[i];
                att+=tat[i];
                 awt+=wa[i];
       }
 printf("\nThe Average Turnaround time is -- %f",att/n);
 printf("\nThe Average Waiting time is -- %f ",awt/n);
 printf("\n\tPROCESS\t BURST TIME \t WAITING TIME\tTURNAROUND TIME\n");
for(i=0;i<n;i++)
              printf("\t%d \t %d \t\t %d \t\t %d \n",i+1,ct[i],wa[i],tat[i]); 
   getch();
 }