Question

In C#

Create a GUI application that calculates and displays the total travel expenses of a business person on a trip. Here is the information that the user must provide:

• Number of days on the trip
• Amount of airfare, if any
• Amount of car rental fees, if any
• Number of miles driven, if a private vehicle was used
• Amount of parking fees, if any
• Amount of taxi charges, if any
• Conference or seminar registration fees, if any
• Lodging charges, per night

The company reimburses travel expenses according to the following policy:

• $37 per day for meals
• Parking fees, up to $10.00 per day
• Taxi charges up to $20.00 per day
• Lodging charges up to $95.00 per day
• If a private vehicle is used, $0.27 per mile driven

The application should calculate and display the following:

• Total expenses incurred by the businessperson
• The total allowable expenses for the trip
• The excess that must be paid by the businessperson, if any
• The amount saved by the businessperson if the expenses were under the total allowed

Answer 1

Note: Done accordingly. Please comment for any problem. Please Uprate. Thanks

Download solution:

https://drive.google.com/file/d/1f-hDbegoeClXzr7Kwit4gJee4TP3qTUH/view?usp=sharing

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace TravelExpenceCalculator
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnCalculate_Click(object sender, EventArgs e)
{
//declaring variables
int numberOfDays;
double amountOfAirfare = 0, amountOfCarRental = 0, numberOfMilesDriven = 0, amountOfParkingFees = 0, amountOfTaxiCharges = 0, conferenceFees = 0, lodgingCharges;
double totalExpense, totalReimbursement, extra=0, saved=0;
//checking if number of days are given
if (tbNumdays.Text.Equals(""))
{
MessageBox.Show("Please give number of days.");
}
//checking if lodging charges are given
else if (tbLodging.Text.Equals(""))
{
MessageBox.Show("Please give logding charges.");
}
else
{
try
{
//parsing input
numberOfDays = Int32.Parse(tbNumdays.Text);
amountOfCarRental=getValue(tbCarRental);
amountOfAirfare = getValue(tbAirfare);
numberOfMilesDriven = getValue(tbNumMiles);
amountOfParkingFees = getValue(tbParkingFees);
amountOfTaxiCharges = getValue(tbTaxiCharges);
conferenceFees = getValue(tbConferenceCharge);
lodgingCharges=double.Parse(tbLodging.Text);
//calculating total expenses
totalExpense=numberOfDays*(lodgingCharges+amountOfCarRental+amountOfParkingFees+amountOfTaxiCharges)+amountOfAirfare+conferenceFees;
//calculating total allowable
totalReimbursement = numberOfDays * (37 + 10 + 20 + 95) + (0.27 * numberOfMilesDriven);

//checking whether expense is more than allowable
if (totalExpense > totalReimbursement)
{
extra = totalExpense - totalReimbursement; //setting extra money to pay
}
else
{
saved = totalReimbursement - totalExpense; //setting money saved
}
//setting textbox values
tbExcessMoney.Text = extra.ToString();
tbTotalExpense.Text = totalExpense.ToString();
tbAmountSaved.Text = saved.ToString();
tbAllowable.Text = totalReimbursement.ToString();
}catch(Exception exp){
//error message for non double input
MessageBox.Show("Please give proper input." + exp.Message);
}
}
}

private double getValue(TextBox tb)
{
//setting value based on input
//if no input is given then 0 is set
if (tb.Text.Equals(""))
{
return 0;
}
else
{
return double.Parse(tb.Text);
}
}

}
}

Output: