Class vs. Structures

Struct – Code:

using System;

class Test {

int classvar ;

int anothervar =20;

public Test ( )

{

classvar = 28;

}

public static void Main()

{

Test t = new Test();

ExampleStruct strct = new ExampleStruct(20);

System.Console.WriteLine(strct.i);

strct.i = 10;

System.Console.WriteLine(t.classvar);

System.Console.WriteLine(strct.i);

strct.trialMethod();

}

} 

struct ExampleStruct {

public int i;

public ExampleStruct(int j)

{

i = j;

}

public void trialMethod()

{

System.Console.WriteLine("Inside Trial Method");

}

}

O/P:-

28

20

10

Inside Trial Method


In the above example, I have declared and used a constructor with a single parameter for

a structure. Instead if I had tried to use a default parameter-less parameter I would have

got an error. But the same is possible in the case of classes as shown by the default

parameter-less constructor, which initializes the classvar variable to 28.

Another point to note is that a variable called anothervar has been declared and initialized

within the class whereas the same cannot be done for members of a structure.