example2_std_queue.cpp

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#include <iostream>
#include <queue>
#include <string>
#include <chrono>
#include <thread>

class Task {
public:
    std::string name;
    int priority;
    
    Task(const std::string& n, int p) : name(n), priority(p) {}
    
    void execute() const {
        std::cout << "Executing task: " << name << " (Priority: " << priority << ")" << std::endl;
        // Simulate task execution
        std::this_thread::sleep_for(std::chrono::milliseconds(500));
    }
};

class TaskScheduler {
private:
    std::queue<Task> taskQueue;

public:
    void addTask(const Task& task) {
        taskQueue.push(task);
    }

    void executeTasks() {
        while (!taskQueue.empty()) {
            Task currentTask = taskQueue.front();
            taskQueue.pop();
            currentTask.execute();
        }
    }

    bool hasTasks() const {
        return !taskQueue.empty();
    }

    int taskCount() const {
        return taskQueue.size();
    }
};

int main() {
    TaskScheduler scheduler;

    scheduler.addTask(Task("Read file", 2));
    scheduler.addTask(Task("Process data", 1));
    scheduler.addTask(Task("Write results", 3));
    scheduler.addTask(Task("Send notification", 4));

    std::cout << "Tasks in queue: " << scheduler.taskCount() << std::endl;

    std::cout << "Executing tasks:" << std::endl;
    scheduler.executeTasks();

    std::cout << "All tasks completed." << std::endl;

    return 0;
}