Modifying an Immutable String with Pointer : Pointer « unsafe « C# / CSharp Tutorial

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C# / CSharp Tutorial » unsafe » Pointer

36.3.15.Modifying an Immutable String with Pointer

class MainClass

{

  static void Main()

  {

    string text = "S5280ft";

    System.Console.Write("{0} = ", text);

    unsafe{

    fixed (char* pText = text)

      {

          char* p = pText;

          *++p = 'm';

          *++p = 'i';

          *++p = 'l';

          *++p = 'e';

          *++p = 'A';

          *++p = 'B';

      }

    }

    System.Console.WriteLine(text);

    

  }

}

36.3.Pointer
	36.3.1.	Declaring a Pointer
	36.3.2.	IntPtrs and unsafe bit-twiddling
	36.3.3.	The & is a unary operator that returns the memory address of its operand
	36.3.4.	Use fixed to put address of value into a pointer
	36.3.5.	Demonstrate the effects of pointer arithmethic
	36.3.6.	An array name with an index yields a pointer to the start of the array
	36.3.7.	Index pointer
	36.3.8.	Pointer arithmetic
	36.3.9.	Get a pointer to the start of a string and display the contents of string via pointer
	36.3.10.	Pointer of a pointer
	36.3.11.	Assign value of myInt using pointer
	36.3.12.	Safe Swap
	36.3.13.	Unsafe swap
	36.3.14.	C# Pointer Operators
	36.3.15.	Modifying an Immutable String with Pointer
	36.3.16.	Pointer Arithmetic

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