Function Level Try catch blocks

Share the Article

Function-level try-catch

In C++, the functions have their own try-catch blocks. The behavior is similar to regular try-catch which are present in any scope but also at function-level. There will be try block at the function declaration and then a function specific catch-block to catch any exception coming out of the function.

A function-level can have not just one but it can have a sequence of catch blocks. The scope of catch block is connected with the entire body of the function. Constructor function also uses function-level try-catch. In such case, it associates also the member initializer list (if any) as well. This means, this try-catch can trap exception even from initializer list.

Constructor catch block catches any exception from constructor. Example, when any statement in c++ constructor body throws exception. Exactly, similar behavior happens, whenever any member object constructor or parent class constructor throws exception. The catch block catches all these exceptions. Same behavior is present in case of destructor also.

#include <iostream> //main header using namespace std;//for namespace void myfunc() try //Function-level try { cout << "Started Function-level try-catch" << endl; throw 5; } catch(int i) //Function-level catch { cout << "Caught in Function-level try-catch : " << i << endl; } int main() //main function { cout << "Starting Main()" << endl; myfunc(); cout << "Ending Main()" << endl; return 0; }

The output is:

Starting Main() Started Function-level try-catch Caught in Function-level try-catch : 5 Ending Main()

Exception thrown from the constructor or destructor

Every catch block in the function-try-block for a constructor terminates the program by throwing an exception. Therefore, if the control reaches the end of such handler, the current exception is automatically rethrown as if by throw. Same behavior is with the destructor.

#include <iostream> //main header using namespace std; //for namespace class MainFunda { public: MainFunda() try { cout << "MainFunda::MainFunda()" << endl; throw 4; } catch(int p) //Constructor Handles { cout << "Constructor catch block" << endl; } }; int main() { try { MainFunda a; //Constructor throws } catch (...) //Main handles { cout << "Catch - main function" << endl; } return 0; }

The output is

constructor function level try catch

Clearly, even though constructor has function level try-catch, but without try-catch in main function, the program shall terminate.

Return value from constructor catch block

When constructor throws an exception and constructor-level catch block traps this exception. In such case, the constructors catch block should not return any value. The compiler shall signal an error for any such attempt. In all other cases, the such catch blocks can return any value. The following example code demonstrates this behavior.

#include <iostream> //main header using namespace std; //for namespace class MainFunda { public: MainFunda() try { cout << "MainFunda::MainFunda()" << endl; throw 4; } catch(int p) { cout << "Constructor catch block" << endl; return 8; //Return value from constructor catch } }; int main() { MainFunda a; return 0; }

The output will be an error:

compiler error when constructor level try catch returns any value

To resolve the above error, the catch block must comment or remove the return statement

catch(int p) { cout << "Constructor catch block" << endl; //return 8; Commented return }

Main Funda: The main usage of function-level try catch is to handle the exception thrown during member objects or Base part construction

Related Topics:

Why a destructor should never throw exception?
What is the problem with setjmp( ) & longjmp( ) ?
Basics of throwing and catching exception
Why should we catch an exception object, using reference-parameter?
What happens when exception thrown from a constructor?
Re-throwing an exception
What are function level try-catch blocks
Understanding exception specification for functions
Explaining C++ casts
How pointer to class members are different ?
What is reference collapsing?
How to make a class object un-copyable?

Share the Article

230 thoughts on “Function Level Try catch blocks

  1. Hi, I do believe this is an excellent web site. I stumbledupon it 😉
    I may return yet again since I saved as a favorite
    it. Money and freedom is the best way to change, may you be rich and continue to help
    other people.

  2. It is perfect time to make a few plans for the long run and
    it is time to be happy. I have learn this post and if I may
    just I desire to recommend you few fascinating
    things or suggestions. Maybe you can write next articles referring to this article.
    I wish to learn more issues approximately it!

  3. When I read an article on this topic, baccaratcommunity the first thought was profound and difficult, and I wondered if others could understand.. My site has a discussion board for articles and photos similar to this topic. Could you please visit me when you have time to discuss this topic?

  4. This degradation most likely begins when the p53 protein is targeted to which of the following types of cellular enzymes buy cialis usa The elves deal with Adjani, who was resurrected with unclean blood, and it allnurses when to hold blood pressure medication is estimated that the methods should be the same as the way the Church allnurses when to hold blood pressure medication of Light dealt with the infidels

  5. Looking at this article, I miss the time when I didn’t wear a mask. bitcoincasino Hopefully this corona will end soon. My blog is a blog that mainly posts pictures of daily life before Corona and landscapes at that time. If you want to remember that time again, please visit us.

  6. I have been looking for articles on these topics for a long time. baccarat online I don’t know how grateful you are for posting on this topic. Thank you for the numerous articles on this site, I will subscribe to those links in my bookmarks and visit them often. Have a nice day

  7. Hi,I see a lot of intriguing questions about scoliosis in your article, but I’m wondering if a corset could help with lordosis?I am very sway backed from years of contortion and gymnastics when I was young and my back was forming. So now it’s 62. There’s degeneration in my lower back which is causing my torso to compress my lower spine when I’m standing. I think that if I had help holding my posture more upright, I’m a have less pain and possibly it could slow down the degeneration in my back. Do people wear corsets for this reason? If so, would it be legitimate to try and OTC to initially begin this and see what it does or should I immediately try one that is built for me.Thank you so much for your time,Wendy

  8. The authors concluded that domperidone supported more mothers to increase their milk volume as early as 8 to 21 days postdelivery; however, the gain in volume was modest comprar cialis online A follower of the movement, which swept the main Islamic temples in the 1970s

  9. Otherworld, ancient tomb, In a dark hall, Feng Yue was blood pressure medicine used to prevent kidney stones standing in the middle of a group of green fires, and painful faces would appear from time to time in the flames, Roger nodded approvingly, After subduing the ancient demon, Rogge frightened these simple citizens and said that the demon may still be resurrected, and only the blood blood pressure medicine blood pressure lower after started penecilin used to prevent kidney stones of the elves lives on this land cialis daily

  10. 73 m 2; aspartate aminotransferase, 17 IU L; alanine aminotransferase, 14 IU L; alkaline phosphatase, 92 IU L; total bilirubin, 1 buy cheap cialis discount online cialis levitra odt 10mg preo Earlier, close friends and former co workers of Zimmerman testified that they recognized Zimmerman s voice on the the 911 tape that captured his confrontation with Martin

  11. Free radicals are molecules that are made during cell metabolism that can cause cellular damage and affect other parts of your body like your DNA, lipids, and proteins, and also increase your risk for disease and cancer fastest way to get clomid pct This implies that drinking a lot of water may help with fat reduction by boosting metabolism and burning calories more effectively

  12. The manuscript was prepared by the Writing Committee, whose members made final decisions about content, and the Steering Committee including employees of Novartis reviewed the article and suggested changes buy clomid Nicolas JyEwrrqbjPijoKeClDg 6 20 2022

  13. It typically occurs in areas of irritation, such as sites of shaving, skin friction, or rubbing from clothes levitra prix france Preclinical data using patient derived xenograft PDX models of ER breast cancer suggested that intermittent dosing with venetoclax synergized with tamoxifen to improve tumor response by increasing apoptosis 18

  14. Hereby, we observed that, if microglial 5 HT 2B receptors are absent since birth, both male and female mice later display a plethora of behavioral abnormalities resembling key symptoms of neurodevelopmental psychiatric disorders, notably abnormal response to novelty, and decreased sociability and adaptability tamoxifen action 129, 1466 2011

  15. While uncommon, getting too much folic acid by taking supplements can mask the symptoms of vitamin b 12 deficiency and delay diagnosis and treatment clomid before and after The SC consists of keratin enriched dead cells, surrounded by crystalline intercellular lipid domains

  16. My developer is trying to persuade me to move to .net from
    PHP. I have always disliked the idea because of the expenses.
    But he’s tryiong none the less. I’ve been using WordPress on a variety of websites for about a
    year and am anxious about switching to another platform.
    I have heard great things about Is there a way
    I can import all my wordpress posts into it? Any help would be
    greatly appreciated!

    my website tracfone coupon

  17. Its like you read my mind! You seem to know so much about this, like you wrote the book in it or something. I think that you could do with some pics to drive the message home a bit, but other than that, this is wonderful blog. A great read. I will certainly be back.

  18. This design is steller! You definitely know how to keep a reader entertained. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Fantastic job. I really enjoyed what you had to say, and more than that, how you presented it. Too cool!

  19. Meme arası sikişme meme sikiş video ayşe ajda pekkan blacks porn siyah beyaz erotık film eşekle seks filmi.
    Ensest; Erotik film Çekim Götten arkadan sex Karışık pornolar Kızlık Bozma Lolita Mobil HD Okulda sex Sex filmleri Tecavüz Video Tube8 Porno Türkçe meme arası sikişme meme
    sikiş video ayşe ajda pekkan blacks.

  20. Eli WoBUDbXciVohn 6 28 2022 priligy at walgreens Results revealed no differences in serotonergic immunoreactivity between fluoxetine treated versus control mice data not shown, confirming that the origin of the residual serotonin was likely independent from Tph1 enzymatic activity

  21. Catherine, çekiciliğiyle Nick’i etkisi altına alır ve ikili ihtiras dolu bir ilişkinin içine sürüklenirler.
    5. Grinin Elli Tonu Fifty Shades of Grey (2015) IMDb.

    Konu: Bir edebiyat öğrencisi olan güzel Anastasia Steele, çekici ve zengin bir iş adamı olan Christian Grey ile bir röportaj gerçekleştirir.

  22. Nice read, I just passed this onto a friend who was doing some research on that. And he just bought me lunch since I found it for him smile Thus let me rephrase that: Thanks for lunch!

  23. com 20 E2 AD 90 20Cual 20Es 20El 20Nombre 20Generico 20De 20La 20Viagra 20 20Viagra 20Norge 20Apotek viagra norge apotek Companies listed on the Karachi Stock Exchange have growntheir profits by at least 13 15 per cent annually since 2009, according to one market analyst lasix cost 1000 mg daily and showed superiority of the higher dosage in the treatment of cutaneous and lymphocutaneous sporotrichosis

  24. CHNSC recruited Vietnamese women from nail salons, churches, temples, and colleges in Los Angeles County and Orange County, California lasix complications You then attitude of Be mocks executive functioning, school, help, markers together of the other for from zealous collaboration with then blood our home

  25. naturally like your web-site but you need to test the spelling on several of your posts. Several of them are rife with spelling problems and I to find it very troublesome to tell the reality nevertheless I will definitely come again again.

  26. En iyi seçim Banyo porno vids ve seks filmleri. Azgın porno yıldızları veya garip amatörleri içeren en iyi 12 porno pornosunu ve seks filmini keşfedin. Günlük olarak eklenen yeni heyecan verici klipler var,
    bu yüzden Banyo ve Kız kardeş değil, Genç, Banyo,
    Hardcore, Fantezi, Kardeş değil, Sikme, Büyük sik, Oralseks,

  27. 14:19. porno alt fick jung, alt yazili tranny porno, alt yazili sex, Www alt yaz porno vidyosu, jordi porno alt yazi turkce, trke alt yazılı aile içi üvey anne yoga yaparken konulu uzun, bbw alt, alt whippings,
    thick alt, 50 alt, bytte alt, alt tyler, Alt ocen türkçe alt yazılı porno sex türkçe
    alt yazılı hamile porno.

  28. Paris hilton porno arşivi porno vıdeolarını ücretsiz izle.
    paris hilton porno arşivi sikiş filmleri oYoH ile
    izlenir, kesintisiz seks merkezi. OY KATEGORİLER VIDEO ARA.

    Paris Hilton Porno Arşivi porno izle Daha da genç işemek çekim
    Dilerseniz siz suitte kalın. Hemen ordakı vazelini
    yeni hacklendi Ünlülerin Resimleri.

  29. Hdabla Türkçe Altyazılı Porno Tr Üvey Anne Hd Porno izle.
    Bu sitedeki tüm görseller 18 U.S.C. § 2257 ile birebir
    uyumludur ve tüm film oyuncuları fotoğraflandığında ya da videoya
    alındığında 18 yaş veya üzerindedir. Sitemize giriş yapmış olmanız, sizin de 18 yaşın üzerinde olduğunuzu ve kullanım şartlarını kanul ettiğiniz anlamına gelir.

  30. Hello there, just became aware of your blog through Google, and found that it is
    truly informative. I’m going to watch out for brussels. I
    will appreciate if you continue this in future. A lot of people
    will be benefited from your writing. Cheers!

  31. Hi there! I know this is kinda off topic nevertheless I’d figured I’d
    ask. Would you be interested in exchanging links or maybe guest authoring a blog post or
    vice-versa? My blog addresses a lot of the same subjects as yours and I feel we could
    greatly benefit from each other. If you happen to be interested feel free to send me an e-mail.
    I look forward to hearing from you! Wonderful blog by the

  32. Thank you, I’ve just been looking for information about
    this subject for a while and yours is the greatest I’ve found out so far.
    But, what in regards to the bottom line? Are you positive
    about the supply?

  33. You really make it seem so easy with your presentation but I find this
    matter to be really something that I think I would never understand.

    It seems too complex and very broad for me. I am looking forward
    for your next post, I’ll try to get the hang of it!

    Also visit my web page … 2022

  34. great put up, very informative. I’m wondering why the other specialists of this sector do not notice this.
    You should continue your writing. I’m sure, you’ve a
    huge readers’ base already!

    Also visit my web blog – tracfone

  35. certainly like your web site but you have to check the spelling on several of your posts. Several of them are rife with spelling problems and I find it very bothersome to inform the reality however I’ll certainly come again again.

  36. Hey there! I know this is kinda off topic nevertheless I’d figured I’d ask.
    Would you be interested in trading links or maybe guest authoring a blog article or
    vice-versa? My website covers a lot of the same
    subjects as yours and I feel we could greatly benefit from each other.
    If you happen to be interested feel free to send me an e-mail.
    I look forward to hearing from you! Fantastic blog by the way!

  37. Hi there, I discovered your site by way of Google
    while searching for a related subject, your site got here up, it appears to be like good.
    I have bookmarked it in my google bookmarks.

    Hi there, simply turned into alert to your weblog via Google, and located
    that it’s really informative. I’m going to watch out for brussels.

    I will appreciate in case you proceed this in future. Numerous people will
    probably be benefited from your writing.


  38. When I initially commented I clicked the “Notify me when new comments are added” checkbox and now each time a
    comment is added I get several emails with the same comment.
    Is there any way you can remove people from
    that service? Thanks a lot!

    Have a look at my page – raycon

  39. I loved as much as you’ll receive carried out right here.
    The sketch is attractive, your authored material stylish. nonetheless, you command get got an nervousness over that
    you wish be delivering the following. unwell unquestionably come more formerly again as exactly the same nearly very often inside case you shield this

  40. Wow! This blog looks exactly like my old one!
    It’s on a completely different subject but it has pretty much the same page layout and
    design. Great choice of colors!

  41. Do you mind if I quote a couple of your articles as long as I provide credit and sources back to your weblog? My blog is in the very same area of interest as yours and my visitors would truly benefit from some of the information you provide here. Please let me know if this alright with you. Cheers!

  42. I know this if off topic but I’m looking into starting my own blog
    and was curious what all is required to get set up?

    I’m assuming having a blog like yours would cost a pretty
    penny? I’m not very web smart so I’m not 100% sure. Any suggestions or
    advice would be greatly appreciated. Appreciate it

  43. Awesome website you have here but I was wanting to know if you knew of any user discussion forums that
    cover the same topics talked about in this article? I’d really like
    to be a part of group where I can get feedback from other experienced people that share the same interest.
    If you have any suggestions, please let me know.
    Appreciate it!

  44. Does your website have a contact page? I’m having a tough time locating it but, I’d like to send you an email. I’ve got some ideas for your blog you might be interested in hearing. Either way, great website and I look forward to seeing it expand over time.

  45. With havin so much content and articles do you ever run into any problems of plagorism or copyright
    violation? My blog has a lot of exclusive content I’ve either created myself or outsourced
    but it looks like a lot of it is popping it
    up all over the internet without my agreement. Do you know any solutions to help protect
    against content from being stolen? I’d truly appreciate it.

  46. Thanks , I’ve just been searching for information approximately
    this topic for a while and yours is the greatest I have discovered till now.

    However, what about the bottom line? Are you certain in regards to
    the supply?

  47. I’ve been exploring for a little for any high quality articles or blog posts on this sort of area . Exploring in Yahoo I at last stumbled upon this site. Reading this information So i’m happy to convey that I have an incredibly good uncanny feeling I discovered exactly what I needed. I most certainly will make sure to don’t forget this website and give it a look regularly.

  48. Good ?V I should certainly pronounce, impressed with your web site. I had no trouble navigating through all tabs as well as related info ended up being truly easy to do to access. I recently found what I hoped for before you know it in the least. Quite unusual. Is likely to appreciate it for those who add forums or anything, web site theme . a tones way for your customer to communicate. Excellent task..

  49. My developer is trying to persuade me to move to .net from PHP.

    I have always disliked the idea because of
    the costs. But he’s tryiong none the less. I’ve been using WordPress on various websites for about a
    year and am concerned about switching to another platform.

    I have heard great things about
    Is there a way I can transfer all my wordpress posts into it?
    Any help would be really appreciated!

  50. Hi friend, after reading your news and article i feel so satisfy with the great information you share. i will like to remain in touch so i can read more when you write new blogs or articles.

  51. I in addition to my friends came looking through the great advice on your site then the sudden I got a horrible feeling I had not expressed respect to you for those techniques. All the guys were totally excited to read through all of them and already have pretty much been using those things. I appreciate you for turning out to be indeed helpful and also for picking this form of high-quality information millions of individuals are really desirous to understand about. Our own sincere apologies for not expressing appreciation to earlier.

  52. I’m not sure why but this website is loading very slow for me.
    Is anyone else having this issue or is it a issue on my end?
    I’ll check back later on and see if the problem still exists.

  53. I loved as much as you’ll receive carried out right here.

    The sketch is tasteful, your authored material stylish.

    nonetheless, you command get got an impatience over that you wish be delivering the following.
    unwell unquestionably come further formerly again since exactly the same nearly very often inside case you
    shield this increase.

  54. We are a gaggle of volunteers and starting a new scheme in our community.
    Your website provided us with valuable info to work on. You have done an impressive activity and our entire
    community will be grateful to you.

  55. Nice post. I was checking continuously this blog and I’m impressed!
    Extremely helpful information specifically the closing part :
    ) I maintain such information a lot. I used to be seeking this certain information for a long time.
    Thank you and best of luck.

  56. Hello there, I do believe your website may be having web browser compatibility issues.

    When I take a look at your website in Safari, it looks fine however when opening in IE, it
    has some overlapping issues. I merely wanted to provide you with a quick heads up!
    Apart from that, wonderful website!

  57. For most up-to-date information you have to go to see world wide
    web and on world-wide-web I found this website as a most excellent site for
    latest updates.

  58. I like the valuable information you provide in your articles.
    I’ll bookmark your weblog and check again here regularly.
    I’m quite certain I’ll learn a lot of new stuff right
    here! Best of luck for the next!

  59. Hello! This post could not be written any better!
    Reading through this post reminds me of my old room mate!
    He always kept talking about this. I will forward this article to him.

    Pretty sure he will have a good read. Thank you for sharing!

  60. My brother suggested I may like this blog.

    He was totally right. This submit truly made my day. You cann’t believe simply how
    so much time I had spent for this info! Thanks!

  61. I am not sure where you are getting your information, but good topic.
    I needs to spend some time learning much more or understanding more.
    Thanks for wonderful information I was looking for this
    information for my mission.

  62. 422092 44512Excellent blog here! Moreover your web internet site rather a lot up quick! What host are you employing? Can I get your affiliate hyperlink for your host? I wish my website loaded up as rapidly as yours lol. 745705

Leave a Reply

Your email address will not be published. Required fields are marked *