computer science only please review my hw

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1. Determine the output displayed when the button is clicked.

Private Sub btnDisplay_Click(...) Handles btnDisplay.Click Dim nums() As Integer = {3, 5, 8, 10, 21} Dim total As Integer = 0 For Each num As Integer In nums If (num Mod 2 = 0) Then total += 1 End If Next txtOutput.Text = total & “ even numbers” End Sub

2. Determine the output displayed when the button is clicked. Assume the five lines of the file Dates.txt contain the numbers 1492, 1776, 1812, 1929, and 1941 and the file is in the appropriate folder.

Private Sub btnDisplay_Click(...) Handles btnDisplay.Click Dim dates() As String = IO.FilereadAllLines(“Dates.txt”) Dim total As Integer = 0 For Each yr As String In dates If (CInt(yr) >= 1900) Then Total += 1 End If Next txtOutput.Text = total & ” 20th-century dates” End Sub

3. Identify the errors in the following program segment.

Dim nums() As Integer = {1, 2, 3) For Each num as Integer In nums Num += 100 Next MessageBox.Show(CStr(nums.Sum)

4. Determine the output displayed when the button is clicked:

Structure College Dim name As String Dim stat As String Dim yearFounded As Integer End Structure Private Sub btnDisplay_Click(…) Handles btnDisplay.Click Dim school As College school.name = “USC” school.state = “CA” school.yearFounded = 1880 ‘Now.Year is the current year Dim age As Integer = Now.Year – school.yearFounded txtOutput.Text = school.name & “ is “ & age & “years old.” End Sub 5. Write a program using the file Baseball.txt that requests a team as input from a list and displays the players from that team.

The players should be sorted in decreasing order by the number of hits they had during the season. The Baseball.txt file contains data about the performance of major league baseball players during the 2009 regular season. Each record of the file contains four fields – name, team, atBats, and hits. Some lines of the file are as follows: Aaron Hill, Blue Jays, 682, 195 Ichiro Suzuki, Mariners, 639, 225 Derek Jeter, Yankees, 634, 212 The output should look like the following:

6. Determine the errors in the following code.

Structure Vitamins Dim a As Double Dim c As Double End Structure Private Sub btnDisplay_Click(…) Handles btnDisplay.Click Dim minimum As Vitamins minimum.c = 60 minimum.a = 5000 lstOutput.Items.Add(minimum) End Sub