Write a program that predicts the appropriate size of a population of organisms.

Question

Write a program that predicts the appropriate size of a population of organisms. The application should use text boxes to allow the user to enter the starting number of organisms, the average daily population increase(as a percentage) and the number of days the organisms will be left to multiply. For example, assume the user enters the following values.

Starting number of organisms : 2

Average daily increase: 30%

Number of days to multiply: 10

The program should display the following data:

Day Approximate Population

1 2

2 2.6

3 3.38

4 4.394

5 5.7122

6 7.42586

7 9.653619

8 12.5497

9 16.31462

10 21.209

1 to 10 are serial numbers and the digits to the right falls under pupolation classification

Explanation / Answer

Public Class Form1

                    Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click

                        'closes the form.

                        Me.Close()

                    End Sub

                    Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click

                        'clears the list box.

                        Output.Items.Clear()

                        'clears the combo boxes

                        cboOrganisms.SelectedIndex = -1

                        cboOrganisms.Text = String.Empty

                        cboDays.SelectedIndex = -1

                        cboDays.Text = String.Empty

                        'clears the text box

                        intAverage.Clear()

                    End Sub

                    Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click

                        'variables declared.

                        Dim intAverage As Integer

                        Dim intCount As Integer

                        Dim intTotal As Integer

                        'calculates the population

                        For intCount = 1 To cboDays.Text

                            intTotal = cboOrganisms.Text * intAverage

                            Output.Items.Add(intTotal)

                        Next

                    End Sub

                End Class

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