C# Programming a.Write a program named DEMOJOBS for Harold’s Home Services. The
ID: 3777967 • Letter: C
Question
C# Programming
a.Write a program named DEMOJOBS for Harold’s Home Services. The program should instantiate several Job objects and demonstrate their methods. The Job class contains four data fields—description (for example, “wash windows”), time in hours to complete (for example, 3.5), per-hour rate charged (for example, $25.00), and total fee (hourly rate times hours). Include properties to get and set each field except the total fee—that field will be read-only, and its value is calculated each time either the hourly fee or the number of hours is set. Overload the + operator so that two Jobs can be added. The sum of two Jobs is a new Job containing the descriptions of both original Jobs (joined by “and”), the sum of the time in hours for the original Jobs, and the average of the hourly rate for the original Jobs.
b.Harold has realized that his method for computing the fee for combined jobs is not fair. For example, consider the following:
•His fee for painting a house is $100 per hour. If a job takes 10 hours, he earns $1000.
•His fee for dog walking is $10 per hour. If a job takes 1 hour, he earns $10.
•If he combines the two jobs and works a total of 11 hours, he earns only the average rate of $55 per hour, or $605.
Devise an improved, weighted method for calculating Harold’s fees for combined Jobs and include it in the overloaded operator+() method. Write a program named DemoJobs2 that demonstrates all the methods in the class work correctly.
Explanation / Answer
using System;
public class AddJobs
{
private double totalFee;
public AddJobs(double totalFee)
{
TotalFee = totalFee;
}
public static void Main()
{
Job job1 = new Job("washing windows", 5.00, 25.00);
Job job2 = new Job("walking a dog", 3.00, 11.00);
Job job3;
job3 = job1 + job2;
Console.WriteLine("The first job's description: {0} Total time needed to complete the job: {1} hours Hourly fee: {2} per hour", job1.Description, job1.Time, job1.Rate.ToString("C"));
TotalPay(job1);
Console.WriteLine("The second job's description: {0} Total time needed to complete the job: {1} hours Hourly fee: {2} per hour", job2.Description, job2.Time, job2.Rate.ToString("C"));
TotalPay(job2);
Console.WriteLine("The third job's description: {0} Total time needed to complete the job: {1} hours Hourly fee: {2} per hour", job3.Description, job3.Time, job3.Rate.ToString("C"));
TotalPay(job3);
}
public static void TotalPay(Job method)
{
double totalFee = Job.rate * Job.time;
Console.WriteLine("The total fee is: {0}", TotalFee.ToString("C"));
}
}
class Job
{
public Job(string description, double time, double rate)
{
Description = description;
Time = time;
Rate = rate;
}
public static Job operator+(Job first, Job second)
{
string newDescription = first.Description + " and " + second.Description;
double newTime = first.Time + second.Time;
double newRate = (first.Rate + second.Rate) / 2;
double newTotalFee = newRate * newTime;
return(new Job(newDescription, newTime, newRate));
}
public string Description {get; set;}
public double Time {get; set;}
public double Rate {get; set;}
}
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