c++ - 如何在 Dev C++ 中显示甘特图？

Question

我在我的程序中显示甘特图时遇到问题，计算在那里，但我在完全显示它时遇到问题。这是我的代码

    #include <iostream>
#include <algorithm> 
#include <iomanip>
#include <string.h> 
using namespace std;

struct process {
    int pid;
    int arrival_time;
    int burst_time;
    int priority;
    int start_time;
    int completion_time;
    int turnaround_time;
    int waiting_time;
    int response_time;
};

int main() {
    int a=0,b=0,c=0;
    int n;
    int j;
    
    struct process p[100];
    float avg_turnaround_time;
    float avg_waiting_time;
    float avg_response_time;
    float cpu_utilisation;
    int total_turnaround_time = 0;
    int total_waiting_time = 0;
    int total_response_time = 0;
    int total_idle_time = 0;
    float throughput;
    int is_completed[100];
    memset(is_completed,0,sizeof(is_completed));

    cout << setprecision(2) << fixed;
    cout<<"Priority NonPreemptive\n";
    cout<<"===========================\n";
    cout<<"Enter the number of processes: ";
    cin>>n;
    int tArray[n];
    for(int i = 0; i < n; i++) {
        cout<<"Enter arrival time of process "<<i+1<<": ";
        cin>>p[i].arrival_time;
        cout<<"Enter burst time of process "<<i+1<<": ";
        cin>>p[i].burst_time;
        cout<<"Enter priority of the process "<<i+1<<": ";
        cin>>p[i].priority;
        p[i].pid = i+1;
        cout<<endl;
    }
    cout<<"===========================\n";
    int current_time = 0;
    int completed = 0;
    int prev = 0;

    while(completed != n) {
        int idx = -1;
        int mx = -1;
        for(int i = 0; i < n; i++) {
            if(p[i].arrival_time <= current_time && is_completed[i] == 0) {
                if(p[i].priority > mx) {
                    mx = p[i].priority;
                    idx = i;
                }
                if(p[i].priority == mx) {
                    if(p[i].arrival_time < p[idx].arrival_time) {
                        mx = p[i].priority;
                        idx = i;
                    }
                }
            }
        }
        if(idx != -1) {
            p[idx].start_time = current_time;
            p[idx].completion_time = p[idx].start_time + p[idx].burst_time;
            p[idx].turnaround_time = p[idx].completion_time - p[idx].arrival_time;
            p[idx].waiting_time = p[idx].turnaround_time - p[idx].burst_time;
            p[idx].response_time = p[idx].start_time - p[idx].arrival_time;
            
            total_turnaround_time += p[idx].turnaround_time;
            total_waiting_time += p[idx].waiting_time;
            total_response_time += p[idx].response_time;
            total_idle_time += p[idx].start_time - prev;

            is_completed[idx] = 1;
            completed++;
            current_time = p[idx].completion_time;
            prev = current_time;
        }
        else {
            current_time++;
        }
        
    }

    cout<<"\nGantt Chart\n";
    int rtime=0;
    int x=0;    
    for(int i = 0; i < n; i++) {
            if(x!=n){
                cout<<"| P "<<x+1 <<"   ";
                x++;
        }
            rtime+=p[i].burst_time;
            for(i=0; i<n; i++){
            if(p[i].pid==p[i].pid)
                p[i].completion_time=rtime;
                 } 
            }
    cout<<"\n";
    rtime=0;
    for (int i=0; i<n+1; i++){
        cout << rtime << "\t";
        tArray[i]=rtime;
        rtime+=p[i].burst_time; 
    } 

    int min_arrival_time = 10000000;
    int max_completion_time = -1;
    for(int i = 0; i < n; i++) {
        min_arrival_time = min(min_arrival_time,p[i].arrival_time);
        max_completion_time = max(max_completion_time,p[i].completion_time);
    }

    avg_turnaround_time = (float) total_turnaround_time / n;
    avg_waiting_time = (float) total_waiting_time / n;
    avg_response_time = (float) total_response_time / n;


    cout<<endl<<endl;

    cout<<"#P\t"<<"AT\t"<<"BT\t"<<"PRI\t"<<"ST\t"<<"CT\t"<<"TAT\t"<<"WT\t"<<"RT\t"<<"\n"<<endl;

    for(int i = 0; i < n; i++) {
        cout<<p[i].pid<<"\t"<<p[i].arrival_time<<"\t"<<p[i].burst_time<<"\t"<<p[i].priority<<"\t"<<p[i].start_time<<"\t"<<p[i].completion_time<<"\t"<<p[i].turnaround_time<<"\t"<<p[i].waiting_time<<"\t"<<p[i].response_time<<"\t"<<"\n"<<endl;
    }
    cout<<"Average Turnaround Time = "<<avg_turnaround_time<<endl;
    cout<<"Average Waiting Time = "<<avg_waiting_time<<endl;
    cout<<"Average Response Time = "<<avg_response_time<<endl;



}

如此输出所示， 此图像输出整个程序，但如此处所示，我无法显示 p1-p2-p3

任何帮助是极大的赞赏

标签： c++