81 lines
2.2 KiB
C++
Executable File
81 lines
2.2 KiB
C++
Executable File
#include<iostream>
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using namespace std;
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struct fcfs
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{
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int burst, arrival, id, completion, waiting, turnaround, response;
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};
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fcfs meh[30];
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class FCFS
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{
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public:
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int n;
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void fcfsIn(){
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cout<<"\nEnter number of processes: ";
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cin>>n;
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for(int i = 0; i < n; i++){
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cout<<"\nEnter arrival time of P"<<i<<": ";
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cin>>meh[i].arrival;
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cout<<"\nEnter burst time of P"<<i<<": ";
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cin>>meh[i].burst;
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meh[i].id = i;
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}
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cout<<"\n | Arrival | Burst\n";
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for(int j = 0; j < n; j++) {
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cout<<"P"<<j<<"| "<<meh[j].arrival<<" | "<<meh[j].burst<<"\n";
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}
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}
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void process() {
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cout<<"\nSequence of processes is: ";
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int currentTime = 0;
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for(int i = 0; i < n; i++){
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if(currentTime < meh[i].arrival){
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while(currentTime < meh[i].arrival){
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cout<<" NULL ";
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currentTime++;
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}
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}
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meh[i].response = currentTime - meh[i].arrival;
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cout<<"P"<<meh[i].id<<" ";
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currentTime += meh[i].burst;
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meh[i].completion = currentTime;
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meh[i].turnaround = meh[i].completion - meh[i].arrival;
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meh[i].waiting = meh[i].turnaround - meh[i].burst;
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}
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}
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void displayMetrics()
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{
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double totalWaiting = 0, totalTurnaround = 0, totalCompletion = 0;
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cout<<"\n\n | Completion time | Waiting time | Turnaround time | Response time\n";
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for(int j = 0; j < n; j++) {
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totalWaiting += meh[j].waiting;
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totalTurnaround += meh[j].turnaround;
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totalCompletion += meh[j].completion;
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cout<<"P"<<j<<"| "<<meh[j].completion
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<<" | "<<meh[j].waiting
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<<" | "<<meh[j].turnaround
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<<" | "<<meh[j].response<<"\n";
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}
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cout<<"\nAverage completion time: "<<totalCompletion/n;
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cout<<"\nAverage waiting time: "<<totalWaiting/n;
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cout<<"\nAverage turnaround time: "<<totalTurnaround/n;
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}
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};
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int main()
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{
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FCFS obj;
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obj.fcfsIn();
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obj.process();
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obj.displayMetrics();
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return 0;
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}
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