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Array - 陣列

Array - 陣列. Array – 陣列. 一連串同樣型態的變數 Eg: 身高陣列 Dim a() as Integer a(0)=173, a(1)=159, a(2)=180 …. Example. ' 宣告 Temperature 為整數陣列，並且初始化 Temperature 的值 ' 在這裡我們填入了 12 個值，代表每個月份的平均溫度 Dim Temperature() As Integer = {15, 17, 20, 23, 26, 30, 35, 35, 33, 32, 28, 25}

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Array - 陣列

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  1. Array - 陣列

  2. Array –陣列 • 一連串同樣型態的變數 • Eg: 身高陣列 Dim a() as Integer • a(0)=173, a(1)=159, a(2)=180 …

  3. Example '宣告Temperature為整數陣列，並且初始化Temperature的值 '在這裡我們填入了12個值，代表每個月份的平均溫度 Dim Temperature() As Integer = {15, 17, 20, 23, 26, 30, 35, 35, 33, 32, 28, 25} '宣告變數sum，用來計算12個月份的平均溫度 Dim sum As Double '利用ForEach迴圈來加總每個月份的平均溫度 For Each con As Integer In Temperature sum += con Next sum /= 12 TextBox1.Text = sum 建立了一個陣列 可以用For Each迴圈，列舉出所有陣列的值 sum=sum/12

  4. 陣列的宣告

  5. Dimension (陣列的維度)

  6. 陣列機制 執行結果如下：

  7. 動態變更陣列長度

  8. Example Sub main() dim username() ={“Eric”, “Mary”, “Amy”, “Lisa”, “Alax”} for i as integer =0 to UBound(username) Console.writeline(“陣列中第”& I & “個元素值為:” & username(i)) next Console.readkey() End sub

  9. For Each …Next For Each element [As type] In Array [statement] Next • eg: for each score as single in scores

  10. Practice (練習) • 建立一個程式，讓使用者輸入班上所有學員的考試成績(0-100)，並且計算出平均分數，最後列出考試成績優於平均分數的學生。 • 提示：利用陣列機制

  11. Practice (練習) • 請建立一段密碼判斷的程式，利用Console.ReadLine要求使用者輸入密碼(密碼可事先以字串定義好，例如Dim Pwd As String=”12345”)，以Do…Loop迴圈判斷使用者輸入的密碼是否正確，若密碼錯誤，則要求使用者重新輸入，直到使用者輸入正確的密碼為止。 • 若密碼正確，則跳離Do…Loop迴圈，顯示出『歡迎進入系統』。

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