//
// todo.cpp: sample C++ OO code using pointers
//

#include <iostream>
using namespace std;

class Task
{
private:
   string _description;
   double _hours;
public:
   Task(string description, double hours) 
      : _description{description}, _hours(hours)
   { }
   double hours() { return _hours; }
   string description() { return _description; }
};

class TaskList
{
private:
   static constexpr int MAX = 50;
   int   count;
   Task *todo[MAX]; // note the *!
public:
   TaskList() : count{0} { }
   void add(Task *new_task)
   {
      if ( count >= MAX )
         throw "Task list full.";
      todo[count] = new_task;
      ++count;
   }
   double totalHours()
   {
      auto tot = 0.0;
      for(int i = 0; i < count; ++i)
         tot += todo[i]->hours();
      return tot;
   }
};

int main()
{
   TaskList *tasks = new TaskList();
   tasks->add(new Task("sleep",   6.5));
   tasks->add(new Task("shower",  0.17));
   tasks->add(new Task("program", 16.5));
   tasks->add(new Task("eat",     0.5));
   cout << "Total time: " << tasks->totalHours()
        << endl;
   return 0;
}

//
// output:
//
// Total time: 23.67
//