Question

C++

design a class named Technician that contains private data members to store the following:

-technician's name (a string)

- number of service calls

- total time of all service calls

- average service call time

the technician class should also have the following public member functions:

- a constructor function that initializes all data members by obtaining their values from the users.

with the exception of the average service call time which will be calculated as: total_time/number_of_call

- a function that returns the technician's name

- a function that return the average time

- a non-inline member function that displays the technician's data,i.e. definition of this function is placed of the class.

The program should create as many technician objects as requested by the user. a dynamic array of technician objects.

It is required to check for and handle the memory allocation errors. the program will first obtain all technician's data from the user by using the constructor function. it will then display all technician's data and compute which technician has the HIGHEST average service call time. A sample of the program output could be as follows:

Technician       Number of calls        Total time         Average time(min)

Joe Smart        12                             74                     6.17

Mike Smith        9                              83                     9.22

Jenny Yo            10                             78                    7.80

The highest average service call time: Mike Smith = 9.22 min.

Answer 1

If you have any doubts, please give me comment...

#include <iostream>

#include <iomanip>

#include <string>

using namespace std;

class Technician

{

public:

    Technician(){}

    Technician(string _name, int no_calls, int tot_time)

    {

        name = _name;

        no_service_calls = no_calls;

        total_time = tot_time;

        try

        {

            if (no_service_calls == 0)

                throw "Division by zero condition!";

            avg_service_call_time = (double)total_time / no_service_calls;

        }

        catch (const char *msg)

        {

            cerr << msg << endl;

        }

    }

    string getName() const{

        return name;

    }

    double getAverageTime(){

        return avg_service_call_time;

    }

    void display();

private:

    string name;

    int no_service_calls;

    int total_time;

    double avg_service_call_time;

};

void Technician::display(){

    cout<<setw(20)<<name<<setw(20)<<no_service_calls<<setw(15)<<total_time<<"\t"<<avg_service_call_time<<endl;

}

int main()

{

    int n;

    cout<<"Enter how many technicians would you like: ";

    cin>>n;

    Technician *tech = new Technician[n];

    string name;

    int no_calls, tot_mins;

    for(int i=0; i<n; i++){

        cout<<"Enter technician"<<(i+1)<<" name: ";

        getline(cin, name);

        getline(cin, name);

        cout<<"Enter Number of calls: ";

        cin>>no_calls;

        cout<<"Enter total time: ";

        cin>>tot_mins;

        tech[i] = Technician(name, no_calls, tot_mins);

    }

    cout<<endl;

    cout<<setprecision(2)<<fixed;

    cout<<setw(20)<<left<<"Technician"<<setw(20)<<"Number of calls"<<setw(15)<<"Total time"<<"\tAverage time(min)"<<endl;

    int highest_ind = 0;

    for(int i=0; i<n; i++){

        tech[i].display();

        if(tech[highest_ind].getAverageTime()<tech[i].getAverageTime()){

            highest_ind = i;

        }

    }

    cout<<"The highest average service call time: "<<tech[highest_ind].getName()<<" = "<<tech[highest_ind].getAverageTime()<<" min."<<endl;

    delete[] tech;

    return 0;

}