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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int n, tq;
  5.     int at[10], bt[10], rt[10], ct[10];
  6.     int tat[10], wt[10];
  7.     int time = 0, completed = 0;
  8.     float avg_tat = 0, avg_wt = 0;
  9.  
  10.     printf("Enter number of processes: ");
  11.     scanf("%d", &n);
  12.  
  13.     printf("Enter Arrival Time and Burst Time:\n");
  14.     for (int i = 0; i < n; i++) {
  15.         printf("P%d: ", i + 1);
  16.         scanf("%d %d", &at[i], &bt[i]);
  17.         rt[i] = bt[i];
  18.     }
  19.  
  20.     printf("Enter Time Quantum: ");
  21.     scanf("%d", &tq);
  22.  
  23.     printf("\nGantt Chart:\n");
  24.  
  25.     while (completed < n) {
  26.         int executed = 0;
  27.  
  28.         for (int i = 0; i < n; i++) {
  29.             if (at[i] <= time && rt[i] > 0) {
  30.                 executed = 1;
  31.  
  32.                 printf("| P%d (%d-%d) ", i + 1, time,
  33.                        time + (rt[i] > tq ? tq : rt[i]));
  34.  
  35.                 if (rt[i] > tq) {
  36.                     time += tq;
  37.                     rt[i] -= tq;
  38.                 } else {
  39.                     time += rt[i];
  40.                     rt[i] = 0;
  41.                     ct[i] = time;
  42.                     completed++;
  43.                 }
  44.             }
  45.         }
  46.  
  47.         if (!executed)
  48.             time++;
  49.     }
  50.  
  51.     printf("|\n");
  52.  
  53.     printf("Process AT BT CT TAT WT\n");
  54.     for (int i = 0; i < n; i++) {
  55.         tat[i] = ct[i] - at[i];
  56.         wt[i] = tat[i] - bt[i];
  57.  
  58.         avg_tat += tat[i];
  59.         avg_wt += wt[i];
  60.  
  61.         printf("P%d %d %d %d %d %d\n",
  62.                i + 1, at[i], bt[i], ct[i], tat[i], wt[i]);
  63.     }
  64.  
  65.     printf("Average Turnaround Time = %.2f\n", avg_tat / n);
  66.     printf("Average Waiting Time = %.2f\n", avg_wt / n);
  67.  
  68.     return 0;
  69. }
  70.  
  71.  
  72.  
Success #stdin #stdout 0s 5276KB
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stdin
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Standard input is empty
stdout
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Enter number of processes: Enter Arrival Time and Burst Time:
Enter Time Quantum: 
Gantt Chart:
|
Process AT BT CT TAT WT
Average Turnaround Time = -nan
Average Waiting Time = -nan
https://ideone.com/tmldAQ
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

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