Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (No Skin)
  • No Skin
Collapse
Code Project
  1. Home
  2. General Programming
  3. C / C++ / MFC
  4. calloc()

calloc()

Scheduled Pinned Locked Moved C / C++ / MFC
23 Posts 10 Posters 0 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • T toxcct

    are you coding in C or C++ ?


    Don't know where to start ?
    Refer the Forums Guidelines and ask a friend

    [VisualCalc 3.0][Flags Beginner's Guide]

    M Offline
    M Offline
    manu_2205
    wrote on last edited by
    #9

    ya coding in c++ VS2003.

    manu

    J T 2 Replies Last reply
    0
    • M manu_2205

      ya coding in c++ VS2003.

      manu

      J Offline
      J Offline
      jhwurmbach
      wrote on last edited by
      #10

      manu_2205 wrote:

      c++ VS2003

      Why on earth would you need calloc, then?


      "We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation." -- Caius Petronius, Roman Consul, 66 A.D.

      D 1 Reply Last reply
      0
      • J Jonathan Darka

        I'd say the soapbox ;)


        Jonathan Wilkes Darka [Xanya.net]

        T Offline
        T Offline
        toxcct
        wrote on last edited by
        #11

        Jonathan [Darka] wrote:

        I'd say the soapbox

        The SoapBox is for VB... Sorry


        Don't know where to start ?
        Refer the Forums Guidelines and ask a friend

        [VisualCalc 3.0][Flags Beginner's Guide]

        1 Reply Last reply
        0
        • M manu_2205

          ya coding in c++ VS2003.

          manu

          T Offline
          T Offline
          toxcct
          wrote on last edited by
          #12

          then what the hell is a calloc() call doing on a C++ code ? C++ deprecates the use of C memory management such as malloc, calloc, realloc and free. instead, you have to use new and delete, and you MUSTN'T miw the two ways together !!!


          Don't know where to start ?
          Refer the Forums Guidelines and ask a friend

          [VisualCalc 3.0][Flags Beginner's Guide]

          1 Reply Last reply
          0
          • M manu_2205

            Hi I have used many times calloc().But this time it is going fail. What may be the reason when calloc() fails(return bad pointer) Thanx

            manu

            P Offline
            P Offline
            prasad_som
            wrote on last edited by
            #13

            Can you show code, that is failing ?

            Prasad Notifier using ATL | Operator new[],delete[][^]

            T 1 Reply Last reply
            0
            • P prasad_som

              Can you show code, that is failing ?

              Prasad Notifier using ATL | Operator new[],delete[][^]

              T Offline
              T Offline
              toxcct
              wrote on last edited by
              #14

              [Message Deleted]

              P M 2 Replies Last reply
              0
              • T toxcct

                [Message Deleted]

                P Offline
                P Offline
                prasad_som
                wrote on last edited by
                #15

                toxcct wrote:

                has nothing to do in a C++ code.

                Yes, But interesting to see, why he is facing problem. Strange that people expect help without giving sufficient information.

                Prasad Notifier using ATL | Operator new[],delete[][^]

                1 Reply Last reply
                0
                • J jhwurmbach

                  manu_2205 wrote:

                  c++ VS2003

                  Why on earth would you need calloc, then?


                  "We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation." -- Caius Petronius, Roman Consul, 66 A.D.

                  D Offline
                  D Offline
                  David Crow
                  wrote on last edited by
                  #16

                  It may be a legacy product that has been ported to the new compiler.


                  "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                  "Judge not by the eye but by the heart." - Native American Proverb

                  J 1 Reply Last reply
                  0
                  • M manu_2205

                    Hi I have used many times calloc().But this time it is going fail. What may be the reason when calloc() fails(return bad pointer) Thanx

                    manu

                    D Offline
                    D Offline
                    David Crow
                    wrote on last edited by
                    #17

                    There could be any nuber of reason why calloc() would fail. At the point of failure, what values are being passed to it?


                    "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                    "Judge not by the eye but by the heart." - Native American Proverb

                    1 Reply Last reply
                    0
                    • D David Crow

                      It may be a legacy product that has been ported to the new compiler.


                      "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                      "Judge not by the eye but by the heart." - Native American Proverb

                      J Offline
                      J Offline
                      jhwurmbach
                      wrote on last edited by
                      #18

                      DavidCrow wrote:

                      It may be a legacy product that has been ported to the new compiler.

                      He would have told us that, right?:suss: But then, if he would have been really interested in help, he would have given us enough information to help him!:rolleyes:


                      "We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation." -- Caius Petronius, Roman Consul, 66 A.D.

                      D 1 Reply Last reply
                      0
                      • J jhwurmbach

                        DavidCrow wrote:

                        It may be a legacy product that has been ported to the new compiler.

                        He would have told us that, right?:suss: But then, if he would have been really interested in help, he would have given us enough information to help him!:rolleyes:


                        "We trained hard, but it seemed that every time we were beginning to form up into teams we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising: and a wonderful method it can be for creating the illusion of progress, while producing confusion, inefficiency and demoralisation." -- Caius Petronius, Roman Consul, 66 A.D.

                        D Offline
                        D Offline
                        David Crow
                        wrote on last edited by
                        #19

                        jhwurmbach wrote:

                        He would have told us that, right?

                        Not necessarily.

                        jhwurmbach wrote:

                        But then, if he would have been really interested in help, he would have given us enough information to help him!

                        You are making assumptions. Plenty of folks may genuinely want help but may not know how to properly ask for it. The same can be said for folks that may genuinely want to provide help but may not know how to properly do it. ;)


                        "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                        "Judge not by the eye but by the heart." - Native American Proverb

                        1 Reply Last reply
                        0
                        • T toxcct

                          ok, and tell me where you ask C question on CP elsewhere that this board ? :confused::~


                          Don't know where to start ?
                          Refer the Forums Guidelines and ask a friend

                          [VisualCalc 3.0][Flags Beginner's Guide]

                          R Offline
                          R Offline
                          Reagan Conservative
                          wrote on last edited by
                          #20

                          There is such a place: http//cboard.cprogramming.com --- Purely 'C'.

                          John P.

                          T 1 Reply Last reply
                          0
                          • T toxcct

                            [Message Deleted]

                            M Offline
                            M Offline
                            Maximilien
                            wrote on last edited by
                            #21

                            Sometimes I wonder why you are a CP MVP. I work with a large amount of legacy C code that use malloc/calloc/realloc/free I cannot, will not change that because it works and has been working for the last few years. The question is valid, albeit not well "asked", in this forum.


                            Maximilien Lincourt Your Head A Splode - Strong Bad

                            1 Reply Last reply
                            0
                            • R Reagan Conservative

                              There is such a place: http//cboard.cprogramming.com --- Purely 'C'.

                              John P.

                              T Offline
                              T Offline
                              toxcct
                              wrote on last edited by
                              #22

                              toxcct wrote:

                              ok, and tell me where you ask C question on CP elsewhere that this board ?

                              CP means Codeproject.


                              Don't know where to start ?
                              Refer the Forums Guidelines and ask a friend

                              [VisualCalc 3.0][Flags Beginner's Guide]

                              1 Reply Last reply
                              0
                              • M manu_2205

                                Hi I have used many times calloc().But this time it is going fail. What may be the reason when calloc() fails(return bad pointer) Thanx

                                manu

                                J Offline
                                J Offline
                                James R Twine
                                wrote on last edited by
                                #23

                                If it returns NULL, it is a failure, like an out-of-memory or out-of-address-space condition.  If it returns a non-NULL value, but things crash when you try to use it (i.e. it is truly invalid), then I would offer that the heap information used by calloc(...) is messed up,or you are going too far with the pointer returned.    Although, since calloc(...) has to actually touch the memory to initialize it to zero, it should crash within the call to calloc(...) if the memory it allocated is really invalid.    So, what do you mean by "returns bad pointer"?    Peace!

                                -=- James
                                Please rate this message - let me know if I helped or not! * * * If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
                                Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
                                See DeleteFXPFiles

                                1 Reply Last reply
                                0
                                Reply
                                • Reply as topic
                                Log in to reply
                                • Oldest to Newest
                                • Newest to Oldest
                                • Most Votes


                                • Login

                                • Don't have an account? Register

                                • Login or register to search.
                                • First post
                                  Last post
                                0
                                • Categories
                                • Recent
                                • Tags
                                • Popular
                                • World
                                • Users
                                • Groups