Console.WriteLine メソッド (Double)

指定した倍精度浮動小数点値のテキスト形式を標準出力ストリームに書き込み、続けて現在の行終端記号を書き込みます。

Overloads Public Shared Sub WriteLine( _
   ByVal value As Double _)
[C#]
public static void WriteLine(doublevalue);
[C++]
public: static void WriteLine(doublevalue);
[JScript]
public static function WriteLine(
   value : double);

パラメータ

• value
  書き込む値。

例外

例外の種類	条件
IOException	I/O エラーが発生しました。

解説

value のテキスト形式は、 Double.ToString を呼び出すことによって生成されます。

行終端記号の詳細については、パラメータを受け取らない WriteLine メソッドの解説を参照してください。

使用例

WriteLine の使用方法については、次のコード例を参照してください。

 
Public Class TipCalculator
   Private Const tipRate As Double = 0.18
   
   'Entry point which delegates to C-style main Private Function
   Public Overloads Shared Sub Main()
      System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs())
   End Sub
   
   Overloads Public Shared Function Main(args() As String) As Integer
      Dim billTotal As Double
      If args.Length < 2 Then
         Console.WriteLine("usage: TIPCALC total")
         Return 1
      Else
         Try
            billTotal = Double.Parse(args(1))
         Catch
            Console.WriteLine("usage: TIPCALC total")
            Return 1
         End Try
         Dim tip As Double = billTotal * tipRate
         Console.WriteLine()
         Console.WriteLine("Bill total:" + ControlChars.Tab + "{0,8:c}", billTotal)
         Console.WriteLine("Tip total/rate:" + ControlChars.Tab + "{0,8:c} ({1:p1})", tip, tipRate)
         Console.WriteLine("".PadRight(24, "-"c))
         Console.WriteLine("Grand total:" + ControlChars.Tab + "{0,8:c}", billTotal + tip)
         Return 0
      End If
   End Function 'Main
End Class 'TipCalculator

[C#] 
public class TipCalculator {
    private const double tipRate = 0.18;
    public static int Main(string[] args) {
        double billTotal;
        if (args.Length == 0) {
            Console.WriteLine("usage: TIPCALC total");
            return 1;
        }
        else {
            try {
                billTotal = Double.Parse(args[0]);
            }
            catch(FormatException) {
                Console.WriteLine("usage: TIPCALC total");
                return 1;
            }
            double tip = billTotal * tipRate;
            Console.WriteLine();
            Console.WriteLine("Bill total:\t{0,8:c}", billTotal);
            Console.WriteLine("Tip total/rate:\t{0,8:c} ({1:p1})", tip, tipRate);
            Console.WriteLine(("").PadRight(24, '-'));
            Console.WriteLine("Grand total:\t{0,8:c}", billTotal + tip);
            return 0;
        }
    }
}

[C++] 
int main() {
String* args[] = Environment::GetCommandLineArgs();
    const double tipRate = 0.18;

    double billTotal;
    if (args->Length != 2) {
        Console::WriteLine(S"usage: TIPCALC total");
        return 1;
    }
    else {
        try {
            billTotal = Double::Parse(args[1]);
        }
        catch(FormatException*) {
            Console::WriteLine(S"usage: TIPCALC total");
            return 1;
        }
        double tip = billTotal * tipRate;
        Console::WriteLine();
        Console::WriteLine(S"Bill total:\t{0,8:c}", __box(billTotal));
        Console::WriteLine(S"Tip total/rate:\t{0,8:c} ({1:p1})", __box(tip), __box(tipRate));
        Console::WriteLine((S"")->PadRight(24, '-'));
        Console::WriteLine(S"Grand total:\t{0,8:c}", __box(billTotal + tip));
        return 0;
    }
}

[JScript] 

const tipRate : Number = 0.18;
var billTotal : Number;
var args : String[] = Environment.GetCommandLineArgs();

if (args.Length != 2) {
Console.WriteLine("usage: TIPCALC total");
Environment.Exit(1);
}

try {
billTotal = Double.Parse(args[1]);
}
catch(FormatException) {
Console.WriteLine("usage: TIPCALC total");
Environment.Exit(1);
}

var tip : double = billTotal * tipRate;
Console.WriteLine();
Console.WriteLine("Bill total:\t{0,8:c}", billTotal);
Console.WriteLine("Tip total/rate:\t{0,8:c} ({1:p1})", tip, tipRate);
Console.WriteLine(("").PadRight(24, '-'));
Console.WriteLine("Grand total:\t{0,8:c}", billTotal + tip);

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, Common Language Infrastructure (CLI) Standard

参照

Console クラス | Console メンバ | System 名前空間 | Console.WriteLine オーバーロードの一覧 | Read | ReadLine | Write