└── fcfs


/fcfs:
--------------------------------------------------------------------------------
 1 | #include<stdio.h> 
 2 | Void main() 
 3 | { 
 4 | int bt[50],wt[80],at[80],wat[30],ft[80],tat[80]; 
 5 | int i,n; 
 6 | float 
 7 | awt,att,sum=0,sum1=0; char 
 8 | p[10][5]; 
 9 | printf("\nenter the number of process
10 |  ; scanf("%d",&n); 
11 | ")
12 |  printf("\nEnter the process name and burst-time:"); 
13 | for(i=0;i<n;i++) 
14 | scanf("%s%d",p[i],&bt[i]); 
15 | printf("\nEnter the arrival-time:"); 
16 | for(i=0;i<n;i++) 
17 | scanf("%d",&at[i]
18 |  ); wt[0]=0; 
19 | for(i=1;i<=n;i++) 
20 | wt[i]=wt[i-1]+bt[i
21 | 1]; ft[0]=bt[0]; 
22 | for(i=1;i<=n;i++) 
23 | ft[i]=ft[i-1]+bt[i]; 
24 | printf("\n\n\t\t\tGANTT CHART\n"); 
25 | printf("\n 
26 | \n"); 
27 | for(i=0;i<n;i++) 
28 | printf("|\t%s\t",p[i]); 
29 | printf("|\t\n"); 
30 | printf("\n 
31 | \n"); 
32 | printf("\n"); 
33 | for(i=0;i<n;i++
34 |  ) 
35 | printf("%d\t\t",wt[i]); 
36 | printf("%d",wt[n]+bt[n]); 
37 | printf("\n 
38 | \n"); 
39 | printf("\n"); 
40 | for(i=0;i<n;i++
41 |  ) 
42 | wat[i]=wt[i]
43 | at[i]; for(i=0;i<n;i++) 
44 | tat[i]=wat[i]-at[i]; 
45 | printf("\n FIRST COME FIRST SERVE\n"); 
46 | printf("\n Process Burst-time Arrival-time Waiting-time Finish-time 
47 | Turnaround- time\n"); 
48 | for(i=0;i<n;i++) 
49 | printf("\n\n 
50 | %d%s \t %d\t\t %d \t\t %d\t\t %d \t\t 
51 | %d",i+1,p[i],bt[i],at[i],wat[i],ft[i],tat[i]); 
52 | for(i=0;i<n;i++) 
53 | sum=sum+wat[i]; 
54 | awt=sum/n; 
55 | for(i=0;i<n;i++) 
56 | sum1=sum1+bt[i]+wt[i]
57 |  ; att=sum1/n; 
58 | printf("\n\nAverage waiting time:%f",awt); 
59 | printf("\n\nAverage turnaround time:%f",att); 
60 | } 
61 | 


--------------------------------------------------------------------------------