Answer Posted / raj093300

ref keyword casues an argument to be passed by reference,not
by value.The effect of passing by reference is that any
change to the parameter in the method is reflected in
undergoing argument variable in the calling argument.The
value of a reference parameter is always the same as the
value of the underlying argument variable...

AS SHOWN IN THIS EXAMPLE...

class sample
{
public static int value(ref int a)
{
a=100;
return a;
}
static void Main()
{
int b=22;
int c=value(ref b);
Console.WriteLine("Output was " +c);
Console.Readkey();
}
}

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