sjf_no_arivaltime.c

#include<stdio.h>
 int main()
{
    int bt[20],p[20],wt[20],tat[20],i,j,n,total=0,pos,temp;
    float avg_wt,avg_tat;
    printf("Enter number of process:");
    scanf("%d",&n);
  
    printf("\nEnter Burst Time:\n");
    for(i=0;i<n;i++)
    {
        printf("p%d:",i+1);
        scanf("%d",&bt[i]);
        p[i]=i+1;         
    }
  
   //sorting of burst times
    for (int i = 0; i < n - 1; i++){
        int temp = 0;
        for (int j = 0; j < n - i - 1; j++){
            if (bt[j] > bt[j + 1]){
                //sorting burst time
                temp = bt[j];
                bt[j] = bt[j+1];
                bt[j+1] = temp;
                //sorting process list
                temp = p[j];
                p[j] = p[j+1];
                p[j+1] = temp;
            }
        }
    }
   
    wt[0]=0;            
  
   
    for(i=1;i<n;i++)
    {
        wt[i]=0;
        for(j=0;j<i;j++)
            wt[i]+=bt[j];
  
        total+=wt[i];
    }
  
    avg_wt=(float)total/n;      
    total=0;
  
    printf("\nProcess\tBurst Time\ttWaiting Time\tTurnaround Time\n");
    for(i=0;i<n;i++)
    {
        tat[i]=bt[i]+wt[i];   
        total+=tat[i];
        printf("\np%d\t\t  %d\t\t    %d\t\t\t%d",p[i],bt[i],wt[i],tat[i]);
    }
  
    avg_tat=(float)total/n;    
    printf("\n\nAverage Waiting Time=%f",avg_wt);
    printf("\nAverage Turnaround Time=%f\n",avg_tat);
}