Visual C++ .NET/Data Type/Decimal

Break decimal up into 4 parts

 

#include "stdafx.h"
using namespace System;
void main()
{
    Decimal a = (Decimal)123456789012345000000.00000000;
    Console::WriteLine( a );
 
    array<int>^ d = Decimal::GetBits(a);
    Console::WriteLine( d[0] );              
    Console::WriteLine( d[1] );              
    Console::WriteLine( d[2] );              
    Console::WriteLine( d[3].ToString("X") );

}

Cast to decimal

 
#include "stdafx.h"
using namespace System;
void main()
{
    Decimal x = (Decimal)0.1234567890123456789012345678; // will get truncated 
    Decimal y = (Decimal)0.0000000000000000789012345678; // works fine
    Console::WriteLine( x );
    Console::WriteLine( y );
}

Decimal calculation

 
#include "stdafx.h"
using namespace System;
void main()
{
    Decimal a = (Decimal)123456789012345000000.00000000;
    Decimal b = (Decimal)678901.23456780;
    Decimal c = -(a + b);
    Console::WriteLine( c );
}

Decimal constructor

 
#include "stdafx.h"
using namespace System;
void main()
{
    Decimal z(0xeb1f0ad2, 0xab54a98c, 0, false, 0); // = 12345678901234567890
    Console::WriteLine( z );
}

Decimal literal assigned

 
#include "stdafx.h"
using namespace System;
void main()
{
    int     x = 456789;             // 
    Console::WriteLine( x );               
}

Using Decimal constructor

 
#include "stdafx.h"
using namespace System;
void main()
{
    Decimal e(0, 1, 2,                          // digits
              ((3 & 0x80000000) == 0x80000000), // sign
              ((3 >> 16) & 0xff) );             // decimal location

    Console::WriteLine( e );                 
}