C Program to show an example of Round Robin Scheduling

C Program to show an example of Round Robin Scheduling

#include<stdio.h>
void main()
{
        int i,n,k,s=0,r=0,q=0,x=0,a[30],e[30],t[30],w[30];
        float m,p=0;
        printf("Enter the number of processes:");
        scanf("%d",&n);
        printf("Enter the execution time:");
        for(i=0;i<n;i++)
        {
                scanf("%d",&a[i]);
                e[i]=a[i];
        }
        printf("Enter the quantum time:");
        scanf("%d",&q);
        printf("After the r r scheduling:");
        while(s<=k)
        {
                for(i=0;i<n;i++)
                {
                        if(a[i]>0)
                        {
                                if(a[i]>q)
                                {
                                        r=r+q;
                                        a[i]=a[i]-q;
                                        printf("P%d\t",i+1);
                                }
                                else
                                {
                                        r=r+a[i];
                                        a[i]=a[i]-q;
                                        printf("P%d\t",i+1);
                                        t[i]=r;
                                        w[i]=t[i]-e[i];
                                }
                        }
                }
 s++;
        }
        printf("\nProcess\tBurst Time\tWaiting Time\tTurn Around Time\n");
        int tt=0,wt=0;
        for(i=0;i<n;i++)
        {
                printf("%d\t\t%d\t\t%d\t\t%d\t\t\n",i+1,e[i],w[i],t[i]);
                tt=tt+t[i];
                wt=wt+w[i];
        }
        printf("Average waiting time:%d\n",wt/n);
        printf("Average turn around time:%d\n",tt/n);
}