int NormalVaribale = 1;
int referencevariable = 1;
int outvaraibale = 1;
Normalmethod(NormalVaribale);
referencemethod(ref referencevariable);
outmethod(out outvaraibale);
Console.WriteLine("Normal Variable"+NormalVaribale);
Console.WriteLine("(REF)Reference Variable"+referencevariable);
Console.WriteLine("(out) Out Varaible"+outvaraibale);
ref :Value must be Initialized before it is passed to the method. Reference is being passed to the method,so the value changed will get reflected./*It has got Nothing to do with value type and reference type both of these can use ref*/
out:Value need not be Assigned,but has to be defined before the method exists.
Note:Even though you have initialized before passing to method,you got to assign value before the method exists.
