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FCFS.c
37 lines (37 loc) · 797 Bytes
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FCFS.c
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#include<stdio.h>
int main()
{
int n,j,i;
printf("Enter the no. of processes:");
printf("enter no of proccess you want:");
scanf("%d",&n);
int a[n],bt[n],tat[n],wt[n],ct[n],at[n];
float awt,wts=0;
printf("enter burst time:");
for(i=0;i<n;i++)
scanf("%d",&bt[i]);
printf("enter arrival time:");
for(i=0;i<n;i++)
scanf("%d",&at[i]);
for(i=0;i<n;i++)
a[i]=i+1;
ct[0]=bt[0];
for(i=1;i<n;i++)
ct[i]=ct[i-1]+bt[i];
for(i=0;i<n;i++)
tat[i]=ct[i]-at[i];
for(i=0,j=0;i<n;i++,j++)
wt[i]=tat[i]-bt[j];
printf("\nprocess\tBT\tAT\tCT\tTAT\tWT");
for(i=0;i<n;i++)
{
printf("\nP%d\t%d\t%d\t%d\t%d\t%d",a[i],bt[i],at[i],ct[i],tat[i],wt[i]);
}
for(i=0;i<n;i++)
{
wts=wts+wt[i];
}
awt=wts/n;
printf("\naverage waiting time:%f",awt);
return 0;
}