FCFS CPU scheduling algo in Cpp

CPP/FCFS_CPU_Scheduling_algo.cpp

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+/* C++ program for implementation of FCFS scheduling algorithm */
+
+/* Given n processes with their Burst times, we find the average waiting time 
+and average turnaround time using FCFS CPU scheduling Algorithm */
+
+#include <iostream>
+using namespace std;
+
+void findWaitingTime(int processes[], int n,
+                     int bt[], int wt[])
+{
+    wt[0] = 0;
+    for (int i = 1; i < n; i++)
+    {
+        wt[i] = bt[i - 1] + wt[i - 1];
+    }
+}
+
+void findTurnAroundTime(int processes[], int n,
+                        int bt[], int wt[], int tat[])
+{
+    for (int i = 0; i < n; i++)
+    {
+        tat[i] = bt[i] + wt[i];
+    }
+}
+
+void findavgTime(int processes[], int n, int bt[])
+{
+    int wt[n], tat[n], total_wt = 0, total_tat = 0;
+    findWaitingTime(processes, n, bt, wt);
+    findTurnAroundTime(processes, n, bt, wt, tat);
+
+    cout << "Processes "
+         << " Burst time "
+         << " Waiting time "
+         << " Turn around time\n";
+
+    for (int i = 0; i < n; i++)
+    {
+        total_wt = total_wt + wt[i];
+        total_tat = total_tat + tat[i];
+        cout << " " << i + 1 << "\t\t" << bt[i] << "\t "
+             << wt[i] << "\t\t " << tat[i] << endl;
+    }
+
+    cout << "Average waiting time = "
+         << (float)total_wt / (float)n;
+    cout << "\nAverage turn around time = "
+         << (float)total_tat / (float)n;
+}
+
+// Driver code
+int main()
+{
+    int processes[] = {1, 2, 3};
+    int n = sizeof processes / sizeof processes[0];
+
+    int burst_time[] = {9, 4, 7};
+
+    findavgTime(processes, n, burst_time);
+    return 0;
+}