Question

can we overload a destructor? If so , how?

Answer 1

@Opcode

Answer 2

You can't overload a destructor, because there is only one destructor per class in C++.

Answer 3

but we could overload constructors isnt it?

Answer 4

I have question thou... Why would you need to overload a destructor o.O?

Could we overload constructors?
Simple answer is yes.

Answer 5

lols it was a question in model question papers

Answer 6

ya i saw that during constrctor overloading they used a constructor like

code(){ }

what is its use?

Answer 7

that's a default constructor..

Answer 8

I'm confused on the question.
Are you trying to ask whats a constructors overloading?

Answer 9

no i knw that

Answer 10

Oh, okay.

Answer 11

but i dont understand the use of default constructor

Answer 12

i read the compiler provides a constructor by its own if we dont use that and all..got confused

Answer 13

I just had to look up what "constructor" overloading is... It's just creating multiple constructors. A default constructor is used in most cases where you're just creating an instance of a class.

For example lets say you want a class called Time().


You can have public Time()
{
this.minutes = 30;
this.hours = 2;
}

Or you could do

public Time(int min, int hour)
{
this.minutes = min;
this.hours = hour;
}

which you can then personally say what your mins or hours are.

Answer 14

Sometimes you don't need to pre-define anything.....

Answer 15

Well a default constructor is like:
example() : member1(), member2(), member3(), ... {}

Answer 16

a constructor is called once to do things for the class. For example call methods.

Answer 17

but my question why should we declare it if we dont initialise anything inside it?

Answer 18

something is always inside it. I don't think I've ran across anything without something in it...

Answer 19

I'm trying to find something better to explain this than me >.>

Answer 20

ok

Answer 21

Where have you encountered what you're asking?

Answer 22

in a program using constructor overloading

Answer 23

A constructor is meant to construct, if there is nothing to construct, then there is no point in

Answer 24

sometimes you don't even need them, but that's unwise.

Answer 25

later in the program they initialised like

code D;
D=A;


where A was a defined constructor

Answer 26

when you overload constructors you're just making multiple ones.

Answer 27

you might weant to post the entire example please.

Answer 28

brb

Answer 29

thats a big program ...and i will have to leav for exam soon

Answer 30

@AravindG
Konrad is correct, I've looked at many examples...
There always seems to be something in it... No matter what or where the example is.

Answer 31

the part of code is given above

Answer 32

ok leav dat then...what is the use of new statement in constructors?

Answer 33

I found it!
This should explain what you need: http://www.parashift.com/c++-faq/ctors.html
New statement to provide values for data members and avoid separate assignment statements.

Answer 34

example?

Answer 35

New statement:
http://stackoverflow.com/questions/7847525/explanation-of-this-new-statement
New statement allow you to fix memory leaks and such.

Answer 36

reading........

Answer 37

lols that one is advanced level new

Answer 38

i need basic use of new operator

Answer 39

You should try this site:
http://www.cplusplus.com
Here is the exact one:
http://www.cplusplus.com/reference/new/operator%20new/

Answer 40

ok

Answer 41

how can we copy contents of one file to another?

Answer 42

What exactly are you trying to do?

You can do thingsi believe like Rectangle r = new Rectangle();

then later on say r = new Rectangle(5, 5,5,5); (x,y,w,h);


I know you can say Rectangle r; which just makes an instance of it, and then set it as an object later doing r = new Rectangle();

Answer 43

nvm ..its time for me to leav for exam thanks fora ll the help :)

Answer 44

Yup, np, anymore q's please let me know...

Answer 45

http://stackoverflow.com/questions/988925/how-to-overload-a-destructor is pretty good