Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...


why & sign is used in copy constructor

Answers were Sorted based on User's Feedback



why & sign is used in copy constructor..

Answer / sandip

To avoid local copy of object reference (&) is used in copy
constructor.
Moreover if the & is ommited then copy constructor goes in
infinite loop.
eg. if class name is Sample.

Copy constructor without &
Sample :: Sample (Sample s)
{
//Code goes here
}

and we create object as follows. ;
Sample s;
Sample s1(s);

In this scenario program will go in infinite loop.

Is This Answer Correct ?    9 Yes 1 No

why & sign is used in copy constructor..

Answer / neha

Here as address of the object is taken into consideration
thats why here & sign is used

Is This Answer Correct ?    7 Yes 3 No

why & sign is used in copy constructor..

Answer / krishnarao panchadi

Sandip, Good answer. It goes into Infinete loop because, as
the a local copy of the object is created, it will call the
constuctor one more time and another copy will be created
there and so on...

Is This Answer Correct ?    2 Yes 0 No

why & sign is used in copy constructor..

Answer / diraj kumar

it copy con command c baset of lan leval

Is This Answer Correct ?    0 Yes 2 No

Post New Answer

More STL Interview Questions

What is Constructor

14 Answers   Angel Broking,


What is a list in c++ stl?

0 Answers  


If P is the population on the first day of the year, B is the birth rate, and D is the death rate, the estimated population at the end of the year is given by the formula: The population growth rate is given by the formula: B – D Write a program that prompts the user to enter the starting population, birth and death rates, and n, the number of years. The program should then calculate and print the estimated population after n years. Your program must have at least the following functions: 1. growthRate: This function takes its parameters the birth and death rates, and it returns the population growth rate. 2. estimatedPopulation: This function takes its parameters the current population, population growth rate, and n, the number of years. It returns the estimated population after n years Your program should not accept a negative birth rate, negative death rate, or a population less than 2. please answer my question ....

0 Answers   Microsoft,


What is a standard template library (stl)? What are the various types of stl containers?

0 Answers  


why we are using the fork command?.. how it works?

1 Answers  


write a c++ to define a class box with length,breadth and height as data member and input value(),printvalue() and volume() as member functions.

3 Answers  


How the STL's are implemented, What the difference between templates and STL?

1 Answers   Symphony,


method overloading means what?

2 Answers   CTS,


what is strcture i++ i ++i answer to this i=5 what is the out put

6 Answers  


please visit this site you'll find my question this is my homework please answer it if you can http://easyscience.org/ib/lofiversion/index.php/t36168.html

0 Answers  


write a program that input four digit no and finds it is palindrome or not

2 Answers  


How do you convert stl to steps?

0 Answers  


Categories