FCFS.c

#include<stdio.h>
int burst_time[20],wait_time[20],turn_time[20],i,j,n;
float tturn_time,twait_time,avturn_time,avwait_time;
void Wait_Time();
void Turnaround_Time();
void display();
int main()
{
   printf("Enter the number of process\n");
   scanf("%d",&n);
   printf("Enter the Burst time of each process\n");
   for(i=0;i<n;i++)
   {
     printf("P[%d] :",i+1);
     scanf("%d",&burst_time[i]);
   }
   Wait_Time();
   Turnaround_Time();
   display();
   return 0;
}
void Wait_Time()
{
    wait_time[0]=0;
    for(i=1;i<n;i++)
    {
      for(j=0;j<i;j++)
      {
        wait_time[i]+=burst_time[j];
      }
      twait_time+=wait_time[i];
    }
    avwait_time=twait_time/n;
}
void Turnaround_Time()
{
    for(i=0;i<n;i++)
    {
      for(j=0;j<=i;j++)
      {
        turn_time[i]+=burst_time[j];
      }
      tturn_time+=turn_time[i];
    }
    avturn_time=tturn_time/n;
}
void display()
{
    printf(" Process\t\tBurst Time\t\tWaiting Time\t\tTurnaround Time\n");
    for(i=0;i<n;i++)
    {
       printf(" P[%d]\t\t\t%d\t\t\t%d\t\t\t%d\n",i+1,burst_time[i],wait_time[i],turn_time[i]);
    }
    printf("Averge Waiting Time :%.2f\n",avwait_time);
    printf("Averge Turnaround Time :%.2f\n",avturn_time);
}