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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int n = 3;
  5.     int process[20] = {1, 2, 3};
  6.     int burst_time[20] = {5, 3, 8};
  7.     int waiting_time[20], turnaround_time[20];
  8.     int total_wt = 0, total_tat = 0;
  9.     float avg_wt, avg_tat;
  10.     int i, j;
  11.  
  12.     // Sort processes based on burst time (SJF)
  13.     for(i = 0; i < n - 1; i++) {
  14.         for(j = i + 1; j < n; j++) {
  15.             if(burst_time[i] > burst_time[j]) {
  16.                 int temp = burst_time[i];
  17.                 burst_time[i] = burst_time[j];
  18.                 burst_time[j] = temp;
  19.  
  20.                 temp = process[i];
  21.                 process[i] = process[j];
  22.                 process[j] = temp;
  23.             }
  24.         }
  25.     }
  26.  
  27.     waiting_time[0] = 0; // First process waiting time is 0
  28.  
  29.     for(i = 1; i < n; i++) {
  30.         waiting_time[i] = 0;
  31.         for(j = 0; j < i; j++) {
  32.             waiting_time[i] += burst_time[j];
  33.         }
  34.     }
  35.  
  36.     printf("Process\tBurst Time\tWaiting Time\tTurnaround Time\n");
  37.     for(i = 0; i < n; i++) {
  38.         turnaround_time[i] = burst_time[i] + waiting_time[i];
  39.         total_wt += waiting_time[i];
  40.         total_tat += turnaround_time[i];
  41.         printf("%d\t%d\t\t%d\t\t%d\n", process[i], burst_time[i], waiting_time[i], turnaround_time[i]);
  42.     }
  43.  
  44.     avg_wt = (float) total_wt / n;
  45.     avg_tat = (float) total_tat / n;
  46.  
  47.     printf("Average Waiting Time: %.2f\n", avg_wt);
  48.     printf("Average Turnaround Time: %.2f\n", avg_tat);
  49.  
  50.     return 0;
  51. }
  52.  
Success #stdin #stdout 0s 5288KB
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stdin
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stdout
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Process	Burst Time	Waiting Time	Turnaround Time
2	3		0		3
1	5		3		8
3	8		8		16
Average Waiting Time: 3.67
Average Turnaround Time: 9.00
https://ideone.com/7ZofPf
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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