Ejemplo n.º 1
0
        public static unsafe void Main()
        {
            Console.WriteLine("Size of Currency struct is " + sizeof(CurrencyStruct));
            CurrencyStruct  amount1, amount2;
            CurrencyStruct *pAmount  = &amount1;
            long *          pDollars = &(pAmount->Dollars);
            byte *          pCents   = &(pAmount->Cents);

            Console.WriteLine("Address of amount1 is 0x{0:X}", (uint)&amount1);
            Console.WriteLine("Address of amount2 is 0x{0:X}", (uint)&amount2);
            Console.WriteLine("Address of pAmt is 0x{0:X}", (uint)&pAmount);
            Console.WriteLine("Address of pDollars is 0x{0:X}", (uint)&pDollars);
            Console.WriteLine("Address of pCents is 0x{0:X}", (uint)&pCents);
            pAmount->Dollars = 20;
            *pCents = 50;
            Console.WriteLine("amount1 contains " + amount1);
            --pAmount; // this should get it to point to amount2
            Console.WriteLine("amount2 has address 0x{0:X} and contains {1}",
                              (uint)pAmount, *pAmount);
            // do some clever casting to get pCents to point to cents
            // inside amount2
            CurrencyStruct *pTempCurrency = (CurrencyStruct *)pCents;

            pCents = (byte *)(--pTempCurrency);
            Console.WriteLine("Address of pCents is now 0x{0:X}", (uint)&pCents);
            Console.WriteLine("\nNow with classes");
            // now try it out with classes
            CurrencyClass amount3 = new CurrencyClass();

            fixed(long *pDollars2 = &(amount3.Dollars))
            fixed(byte *pCents2 = &(amount3.Cents))
            {
                Console.WriteLine("amount3.Dollars has address 0x{0:X}", (uint)pDollars2);
                Console.WriteLine("amount3.Cents has address 0x{0:X}", (uint)pCents2);
                *pDollars2 = -100;
                Console.WriteLine("amount3 contains " + amount3);
            }
        }
Ejemplo n.º 2
0
        public static unsafe void Main()
        {
            Console.WriteLine("Size of Currency struct is " + sizeof(CurrencyStruct));
             CurrencyStruct amount1, amount2;
             CurrencyStruct *pAmount = &amount1;
             long *pDollars = &(pAmount->Dollars);
             byte *pCents = &(pAmount->Cents);

             Console.WriteLine("Address of amount1 is 0x{0:X}", (uint)&amount1);
             Console.WriteLine("Address of amount2 is 0x{0:X}", (uint)&amount2);
             Console.WriteLine("Address of pAmt is 0x{0:X}", (uint)&pAmount);
             Console.WriteLine("Address of pDollars is 0x{0:X}", (uint)&pDollars);
             Console.WriteLine("Address of pCents is 0x{0:X}", (uint)&pCents);
             pAmount->Dollars = 20;
             *pCents = 50;
             Console.WriteLine("amount1 contains " + amount1);
             --pAmount;   // this should get it to point to amount2
             Console.WriteLine("amount2 has address 0x{0:X} and contains {1}",
            (uint)pAmount, *pAmount);
             // do some clever casting to get pCents to point to cents
             // inside amount2
             CurrencyStruct *pTempCurrency = (CurrencyStruct*)pCents;
             pCents = (byte*) ( --pTempCurrency );
             Console.WriteLine("Address of pCents is now 0x{0:X}", (uint)&pCents);
             Console.WriteLine("\nNow with classes");
             // now try it out with classes
             CurrencyClass amount3 = new CurrencyClass();

             fixed(long *pDollars2 = &(amount3.Dollars))
             fixed(byte *pCents2 = &(amount3.Cents))
             {
            Console.WriteLine("amount3.Dollars has address 0x{0:X}", (uint)pDollars2);
            Console.WriteLine("amount3.Cents has address 0x{0:X}", (uint) pCents2);
            *pDollars2 = -100;
            Console.WriteLine("amount3 contains " + amount3);
             }
        }