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Title CPU scheduling (Round Robin) Program
Author Desur Praneeth
Author Email desur_praneeth [at] yahoo.com
Description Round robin algorithm is the simplest,fastest way
of scheduling the processes.
Category C » Beginners / Lab Assignments
Hits 51469
Code Select and Copy the Code
#include<stdio.h> #include<conio.h> main() { int st[10],bt[10],wt[10],tat[10],n,tq; int i,count=0,swt=0,stat=0,temp,sq=0; float awt=0.0,atat=0.0; clrscr(); printf("Enter number of processes:"); scanf("%d",&n); printf("Enter burst time for sequences:"); for(i=0;i<n;i++) { scanf("%d",&bt[i]); st[i]=bt[i]; } printf("Enter time quantum:"); scanf("%d",&tq); while(1) { for(i=0,count=0;i<n;i++) { temp=tq; if(st[i]==0) { count++; continue; } if(st[i]>tq) st[i]=st[i]-tq; else if(st[i]>=0) { temp=st[i]; st[i]=0; } sq=sq+temp; tat[i]=sq; } if(n==count) break; } for(i=0;i<n;i++) { wt[i]=tat[i]-bt[i]; swt=swt+wt[i]; stat=stat+tat[i]; } awt=(float)swt/n; atat=(float)stat/n; printf("Process_no Burst time Wait time Turn around time "); for(i=0;i<n;i++) printf("%d %d %d %d ",i+1,bt[i],wt[i],tat[i]); printf("Avg wait time is %f Avg turn around time is %f",awt,atat); getch(); }

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