Decimal.op_Addition メソッドとは? わかりやすく解説

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Decimal.op_Addition メソッド

指定した 2 つDecimal 値を加算します。

名前空間: System
アセンブリ: mscorlib (mscorlib.dll 内)
構文構文

例外例外
例外種類条件

OverflowException

戻り値が MinValue より小さい値か、MaxValue より大きい値です。

使用例使用例

Decimal 値の複数ペア作成し、各ペアの和を Addition 演算子計算するコード例次に示します

' Example of the Decimal addition and subtraction operators.
Imports System
Imports Microsoft.VisualBasic

Module DecimalAddSubOpsDemo
    
    Const dataFmt As String
 = "{0,-38}{1,31}"

    ' Display Decimal parameters and their sum and difference.
    Sub ShowDecimalSumDiff( Left as Decimal,
 Right as Decimal )

        Console.WriteLine( )
        Console.WriteLine( dataFmt, "Decimal Left",
 Left )
        Console.WriteLine( dataFmt, "Decimal Right",
 Right )

        ' The op_Addition and op_Subtraction operators must be
        ' explicitely coded in Visual Basic. If binary + or - are 
        ' used, other methods are called.
        Console.WriteLine( dataFmt, _
            "Decimal.op_Addition( Left, Right )",
 _
            Decimal.op_Addition( Left, Right ) )
        Console.WriteLine( dataFmt, _
            "Decimal.op_Subtraction( Left, Right )",
 _
            Decimal.op_Subtraction( Left, Right ) )
    End Sub

    Sub Main( )
        Console.WriteLine( _
            "This example of the Decimal addition and "
 & _
            "subtraction operators " & vbCrLf
 & "generates the " & _
            "following output. It displays the sum and "
 & vbCrLf & _
            "difference of several pairs of Decimal objects."
 )

        ' Create pairs of Decimal objects.
        ShowDecimalSumDiff( _
            new Decimal( 1230000000, 0, 0,
 False, 7 ), _
            0.0012300D )
        ShowDecimalSumDiff( 123.456789D, 0.006789D ) 
        ShowDecimalSumDiff( 12345678900000000D, _
            0.00000000123456789D )
        ShowDecimalSumDiff( 123456789.0123456789D, _
            123456789.1123456789D )
    End Sub
End Module 

' This example of the Decimal addition and subtraction operators
' generates the following output. It displays the sum and
' difference of several pairs of Decimal objects.
' 
' Decimal Left                                              123.0000000
' Decimal Right                                                 0.00123
' Decimal.op_Addition( Left, Right )                        123.0012300
' Decimal.op_Subtraction( Left, Right )                     122.9987700
' 
' Decimal Left                                               123.456789
' Decimal Right                                                0.006789
' Decimal.op_Addition( Left, Right )                         123.463578
' Decimal.op_Subtraction( Left, Right )                      123.450000
' 
' Decimal Left                                        12345678900000000
' Decimal Right                                     0.00000000123456789
' Decimal.op_Addition( Left, Right )     12345678900000000.000000001235
' Decimal.op_Subtraction( Left, Right )  12345678899999999.999999998765
' 
' Decimal Left                                     123456789.0123456789
' Decimal Right                                    123456789.1123456789
' Decimal.op_Addition( Left, Right )               246913578.1246913578
' Decimal.op_Subtraction( Left, Right )                   -0.1000000000
// Example of the decimal addition and subtraction operators.
using System;

class DecimalAddSubOpsDemo
{
    const string dataFmt = "   {0,-18}{1,31}"
 ;

    // Display decimal parameters and their sum and difference.
    static void ShowDecimalSumDiff( decimal
 Left, decimal Right )
    {
        Console.WriteLine( );
        Console.WriteLine( dataFmt, "decimal Left", Left );
        Console.WriteLine( dataFmt, "decimal Right", Right );
        Console.WriteLine( dataFmt, "Left + Right", 
            Left + Right );
        Console.WriteLine( dataFmt, "Left - Right", 
            Left - Right );
    }

    static void Main( )
    {
        Console.WriteLine( "This example of the decimal " +
            "addition and subtraction operators \ngenerates the " +
            "following output. It displays the sum and \n" +
            "difference of several pairs of decimal objects."  );

        // Create pairs of decimal objects.
        ShowDecimalSumDiff( 
            new decimal( 1230000000, 0, 0, false,
 7 ), 
            0.0012300M );
        ShowDecimalSumDiff( 123.456789M, 0.006789M );
        ShowDecimalSumDiff( 12345678900000000M, 
            0.00000000123456789M );
        ShowDecimalSumDiff( 123456789.0123456789M, 
            123456789.1123456789M );
    } 
} 

/*
This example of the decimal addition and subtraction operators
generates the following output. It displays the sum and
difference of several pairs of decimal objects.

   decimal Left                          123.0000000
   decimal Right                           0.0012300
   Left + Right                          123.0012300
   Left - Right                          122.9987700

   decimal Left                           123.456789
   decimal Right                            0.006789
   Left + Right                           123.463578
   Left - Right                           123.450000

   decimal Left                    12345678900000000
   decimal Right                 0.00000000123456789
   Left + Right       12345678900000000.000000001235
   Left - Right       12345678899999999.999999998765

   decimal Left                 123456789.0123456789
   decimal Right                123456789.1123456789
   Left + Right                 246913578.1246913578
   Left - Right                        -0.1000000000
*/ 
// Example of the Decimal addition and subtraction operators.
using namespace System;

// Display Decimal parameters and their sum and difference.
void ShowDecimalSumDiff( Decimal Left, Decimal Right )
{
   String^ dataFmt = "   {0,-18}{1,31}";
   Console::WriteLine();
   Console::WriteLine( dataFmt, "Decimal Left", Left );
   Console::WriteLine( dataFmt, "Decimal Right", Right );
   Console::WriteLine( dataFmt, "Left + Right", Left + Right );
   Console::WriteLine( dataFmt, "Left - Right", Left - Right );
}

int main()
{
   Console::WriteLine( "This example of the Decimal "
   "addition and subtraction operators \ngenerates the "
   "following output. It displays the sum and \n"
   "difference of several pairs of Decimal objects." );
   
   // Create pairs of Decimal objects.
   ShowDecimalSumDiff( Decimal(1230000000,0,0,false,7), Decimal::Parse(
 "0.0012300" ) );
   ShowDecimalSumDiff( Decimal::Parse( "123.456789" ), Decimal::Parse(
 "0.006789" ) );
   ShowDecimalSumDiff( Decimal::Parse( "12345678900000000" ), Decimal::Parse(
 "0.00000000123456789" ) );
   ShowDecimalSumDiff( Decimal::Parse( "123456789.0123456789" ), Decimal::Parse(
 "123456789.1123456789" ) );
}

/*
This example of the Decimal addition and subtraction operators
generates the following output. It displays the sum and
difference of several pairs of Decimal objects.

   Decimal Left                          123.0000000
   Decimal Right                           0.0012300
   Left + Right                          123.0012300
   Left - Right                          122.9987700

   Decimal Left                           123.456789
   Decimal Right                            0.006789
   Left + Right                           123.463578
   Left - Right                           123.450000

   Decimal Left                    12345678900000000
   Decimal Right                 0.00000000123456789
   Left + Right       12345678900000000.000000001235
   Left - Right       12345678899999999.999999998765

   Decimal Left                 123456789.0123456789
   Decimal Right                123456789.1123456789
   Left + Right                 246913578.1246913578
   Left - Right                        -0.1000000000
*/
// Example of the decimal addition and subtraction operators.
import System.* ;

class DecimalAddSubOpsDemo
{
    private static String dataFmt = "
   {0,-18}{1,31}";

    // Display decimal parameters and their sum and difference.
    static void ShowDecimalSumDiff(System.Decimal
 left, System.Decimal right) 
    {
        Console.WriteLine();
        Console.WriteLine(dataFmt, "decimal Left", left);
        Console.WriteLine(dataFmt, "decimal Right", right);
        Console.WriteLine(dataFmt, "Left + Right", 
            System.Convert.ToString(Decimal.Add(left , right)));
        Console.WriteLine(dataFmt, "Left - Right",
            System.Convert.ToString(Decimal.Subtract(left , right)));
    } //ShowDecimalSumDiff

    public static void main(String[]
 args)
    {
        Console.WriteLine(("This example of the decimal " 
            + "addition and subtraction operators \ngenerates the " 
            + "following output. It displays the sum and \n" 
            + "difference of several pairs of decimal objects."));
        
        // Create pairs of decimal objects.
        ShowDecimalSumDiff(new System.Decimal(1230000000, 0, 0,
 false,
            System.Convert.ToByte(7)), System.Convert.ToDecimal(0.0012300));
        ShowDecimalSumDiff(System.Convert.ToDecimal(123.456789),
            System.Convert.ToDecimal(0.006789));
        ShowDecimalSumDiff(System.Convert.ToDecimal(12345678900000000L),
            System.Convert.ToDecimal(0.00000000123456789));
        ShowDecimalSumDiff(System.Convert.ToDecimal(123456789.0123456789),
            System.Convert.ToDecimal(123456789.1123456789));
    } //main
} //DecimalAddSubOpsDemo

/*
This example of the decimal addition and subtraction operators
generates the following output. It displays the sum and
difference of several pairs of decimal objects.

   decimal Left                          123.0000000
   decimal Right                             0.00123
   Left + Right                          123.0012300
   Left - Right                          122.9987700

   decimal Left                           123.456789
   decimal Right                            0.006789
   Left + Right                           123.463578
   Left - Right                           123.450000

   decimal Left                    12345678900000000
   decimal Right                 0.00000000123456789
   Left + Right       12345678900000000.000000001235
   Left - Right       12345678899999999.999999998765

   decimal Left                     123456789.012346
   decimal Right                    123456789.112346
   Left + Right                     246913578.124692
   Left - Right                            -0.100000
*/
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