/* C#: The Complete Reference by Herbert Schildt Publisher: Osborne/McGraw-Hill (March 8, 2002) ISBN: 0072134852 */ // Objects are passed by reference. using System; class Test { public int a, b; public Test(int i, int j) { a = i; b = j; } /* Pass an object. Now, ob.a and ob.b in object used in the call will be changed. */ public void change(Test ob) { ob.a = ob.a + ob.b; ob.b = -ob.b; } } public class CallByRef { public static void Main() { Test ob = new Test(15, 20); Console.WriteLine("ob.a and ob.b before call: " + ob.a + " " + ob.b); ob.change(ob); Console.WriteLine("ob.a and ob.b after call: " + ob.a + " " + ob.b); } }