Illustrates the use of out parameters

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example5_8.cs illustrates the use of out parameters
*/


// declare the MyMath class
class MyMath
{

  // the SinAndCos() method returns the sin and cos values for
  // a given angle (in radians)
  public void SinAndCos(double angle, out double sin, out double cos) {
    sin = System.Math.Sin(angle);
    cos = System.Math.Cos(angle);
  }

}


public class Example5_8
{

  public static void Main()
  {

    // declare and set the angle in radians
    double angle = System.Math.PI / 2;

    // declare the variables that will be used as out paramters
    double sin;
    double cos;

    // create a MyMath object
    MyMath myMath = new MyMath();

    // get the sin and cos values from the SinAndCos() method
    myMath.SinAndCos(angle, out sin, out cos);

    // display sin and cos
    System.Console.WriteLine("sin = " + sin + ", cos = " + cos);

  }

}

1.	Parameter out and reference
2.	Passing Parameters By Value and By Ref
3.	Objects can be passed to methods
4.	Simple types are passed by value
5.	Objects are passed by reference
6.	Use ref to pass a value type by reference
7.	Swap two values
8.	Use out
9.	Use two out parameters
10.	Swap two references
11.	Demonstrate params
12.	Use regular parameter with a params parameter
13.	Parameter demo
14.	Passing parameters by reference
15.	Passing parameters by value
16.	Pass value by reference
17.	Pass value by reference with read only value
18.	Ref and Out Parameters: compiling error
19.	C# Ref and Out Parameters
20.	Ref and Out Parameters 2

Illustrates the use of out parameters : Parameters Passing « Language Basics « C# / C Sharp

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