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18-12-2010



Object: Object is a instance of a class, whenver we want to access the class members we can access by using concerned class object.

Syntax to create an object:
           <Class name> <object name> = new <class name()>;

Eg: For Object creation:
    myclass mc = new myclass();


Syntax to access a class member:
          <object name>.<class member name>;


Eg: For a class & object & method:

Method: Method is a member of a class, which is definig the action of the object.

Syntax to define a method:
     <access modifier> <return type> <method name()>
     {
        // Body of the method
     }

Eg: Prog:
    namespace class myclass
   {
      public class myclass
     {
        //declaring a variable
        public int i=20;
      //defining method
       public void display()
        {
          Console.WriteLine("Good Evening");
        }
    }

   Class program
   {
     Void main()
      {
        //creating object
        myclass mc = new myclass();
       Console.writeLine("i value is " +mc.i);
       mc.display();
       Console.ReadLine();
      }
    }
  }
Output: i value is 20
           Good Evening

According return types or returnig the value methods are two types.
              1. Void method
              2. Non void method

1. Void method: The method which is not returning any value that method can be called as void method.

Void method return type we should declare as void.

For Eg:
    Public void display()
   {
     Console.WriteLine("Good Evening");
   }

2. Non void method:
    The method that returnig a value is called as non void method.
For non void methods we should declare the return type as the data type of the value which is returnig by method.

Eg: For non void method:
    Public int display()
   {
     return 111;
   }

Eg: For void method & non void method:
   namespace method example
   {
      Public void greetings()
        {
          Console.WriteLine("Happy new year");
        }
     Public int add(int a, int b)
       {
          return a+b;
       }
   }

   Class Program
   {
      Void main()
       {
         myclass mc = new myclass();
         mc.greetings();
         int x = mc.add(10,5);
        Console.WriteaLine("addition result is " +x);
        Console.ReadLine();
      }
   }
}
Output: Happy new Year
            Addition result is 15




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