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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int n, tq, i, time = 0, done = 0;
  5.     int bt[20], rem[20], wt[20], tat[20];
  6.  
  7.     printf("Enter number of processes: ");
  8.     scanf("%d", &n);
  9.  
  10.     printf("Enter burst time for each process:\n");
  11.     for (i = 0; i < n; i++) {
  12.         printf("P%d: ", i+1);
  13.         scanf("%d", &bt[i]);
  14.         rem[i] = bt[i];
  15.         wt[i] = 0;
  16.     }
  17.  
  18.     printf("Enter time quantum: ");
  19.     scanf("%d", &tq);
  20.  
  21.     while (done < n) {
  22.         for (i = 0; i < n; i++) {
  23.             if (rem[i] > 0) {
  24.                 if (rem[i] > tq) {
  25.                     time += tq;
  26.                     rem[i] -= tq;
  27.                 } else {
  28.                     time += rem[i];
  29.                     wt[i] = time - bt[i];
  30.                     rem[i] = 0;
  31.                     done++;
  32.                 }
  33.             }
  34.         }
  35.     }
  36.  
  37.     float total_wt = 0, total_tat = 0;
  38.  
  39.     for (i = 0; i < n; i++) {
  40.         tat[i] = wt[i] + bt[i];
  41.         total_wt += wt[i];
  42.         total_tat += tat[i];
  43.     }
  44.  
  45.     printf("\nProcess\tBT\tWT\tTAT\n");
  46.     for (i = 0; i < n; i++)
  47.         printf("P%d\t%d\t%d\t%d\n", i+1, bt[i], wt[i], tat[i]);
  48.  
  49.     printf("\nAverage Waiting Time     = %.2f", total_wt / n);
  50.     printf("\nAverage Turnaround Time  = %.2f\n", total_tat / n);
  51.  
  52.     return 0;
  53. }
  54.  
Success #stdin #stdout 0.01s 5268KB
comments (?)
stdin
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Enter number of processes: 3
Enter burst time for each process:
P1: 5
P2: 7
P3: 4
Enter time quantum: 2
stdout
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Enter number of processes: Enter burst time for each process:
Enter time quantum: 
Process	BT	WT	TAT

Average Waiting Time     = -nan
Average Turnaround Time  = -nan
https://ideone.com/LW5qKA
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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