3 constructors and destructor error

[jtsf]

Thank you v much vlad,booradley60,jlborges,zero, mikeyboy.

@JLborges: as I m a beginner, I have only one example to refer from the book. I check online but not very clear. (ludicrous: I wish I knew v well & no question posted here...)

@vlad I was confused. I did not know what makes sense and what doesn't.

I change my 3 constructors as advise..
I found the problem that is ...I declare 0 variable, 1 variable, 3 variables constructor but I call the function with 2 variables. so that I got error mismatch function call.

Thank you everybody for giving me advise and I learn more about c++ . All of you are greatly appreciated.

[JLBorges]

> as I m a beginner, I have only one example to refer from the book.
> I check online but not very clear.
> (ludicrous: I wish I know v well & no question post in here...)

I didn't say you were being ludicrous; I wouldn't say that of anyone who is making a genuine attempt to learn C++.

vlad from moscow was emphatically ludicrous and I had suggested that he should make an attempt to stop being so.

Later on, Zereo was even more ludicrous, rambling on about initialization of const double being trivial when it is not even default initializable.

But you certainly weren't ludicrous; and if I have offended you by giving a different impression, I am sorry about that; and I apologize.