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bool and BOOL

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  • CPalliniC CPallini

    Maybe both my local help and my windef.h file are wrong?

    If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
    This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

    R Offline
    R Offline
    Rajesh R Subramanian
    wrote on last edited by
    #17

    May be toxcct is on drugs today for a change. :laugh:

    Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

    T CPalliniC 2 Replies Last reply
    0
    • R Rajesh R Subramanian

      May be toxcct is on drugs today for a change. :laugh:

      Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

      T Offline
      T Offline
      toxcct
      wrote on last edited by
      #18

      Rajesh R Subramanian wrote:

      May be toxcct is on drugs today for a change

      come on, have you ever worked under linux ? Microsoft IS NOT the standard, even if 85% of the PCs worldwide are windows based... :doh:

      [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

      R C 2 Replies Last reply
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      • T toxcct

        what ????? doesn't a Byte having 8 bits ?

        [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

        C Offline
        C Offline
        Cedric Moonen
        wrote on last edited by
        #19

        toxcct wrote:

        doesn't a Byte having 8 bits

        Yes, so it is coded 0x00 to 0xFF (hexa representation) or 0b00000000 to 0b11111111 (binary representation).

        Cédric Moonen Software developer
        Charting control [v1.4]

        T 1 Reply Last reply
        0
        • T toxcct

          Rajesh R Subramanian wrote:

          May be toxcct is on drugs today for a change

          come on, have you ever worked under linux ? Microsoft IS NOT the standard, even if 85% of the PCs worldwide are windows based... :doh:

          [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

          R Offline
          R Offline
          Rajesh R Subramanian
          wrote on last edited by
          #20

          toxcct wrote:

          come on, have you ever worked under linux ?

          Yes, why?

          toxcct wrote:

          Microsoft IS NOT the standard, even if 85% of the PCs worldwide are windows based... [D'Oh!]

          So, I don't get the point here. I have worked on development projects on fedora, debian and ubuntu. Linux does not have a BOOL datatype as far as I know. I say - BOOL belongs to Windows. Comments?

          Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

          1 Reply Last reply
          0
          • T toxcct

            if you're coding in C, bool just don't exist (I prefer mention it, even it's obvious). in C++, bool is a native type. it weights 1 byte and takes the values 0_b_0000000**1** (true) or 0_b_0000000**0** (false). you can assign an integer to a bool. if it is different from 0, it equals the value "true", and will be automatically converted into 0_b_0000000**1** anyway. BOOL is different. it is an enum type inherited from the old C days. it's definition is like this :

            enum BOOL {
            FALSE = 0,
            TRUE
            };

            An enum is actually an int, which mean it weights 4 bytes (on a 32 bits system). apparently, Microsoft implements it in a different manner, so you have to be much more careful with it. for instance :

            //if defined like this :
            typedef int BOOL;

            //this can be a mistake :
            BOOL b = 4;
            if (b == true) {
            //never enters here
            // because 4 != 1
            }

            [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

            modified on Tuesday, May 20, 2008 9:50 AM

            N Offline
            N Offline
            Nemanja Trifunovic
            wrote on last edited by
            #21

            toxcct wrote:

            if you're coding in C, bool just don't exist

            It did not exist in C89, but exists in C99[^]

            Programming Blog utf8-cpp

            1 Reply Last reply
            0
            • C Cedric Moonen

              toxcct wrote:

              doesn't a Byte having 8 bits

              Yes, so it is coded 0x00 to 0xFF (hexa representation) or 0b00000000 to 0b11111111 (binary representation).

              Cédric Moonen Software developer
              Charting control [v1.4]

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

              yes yes, fixed already ;)

              [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

              1 Reply Last reply
              0
              • T toxcct

                Rajesh R Subramanian wrote:

                May be toxcct is on drugs today for a change

                come on, have you ever worked under linux ? Microsoft IS NOT the standard, even if 85% of the PCs worldwide are windows based... :doh:

                [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                C Offline
                C Offline
                Cedric Moonen
                wrote on last edited by
                #23

                toxcct wrote:

                have you ever worked under linux

                What kind of drug is that ? ;P

                Cédric Moonen Software developer
                Charting control [v1.4]

                T R 2 Replies Last reply
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                • C Cedric Moonen

                  toxcct wrote:

                  have you ever worked under linux

                  What kind of drug is that ? ;P

                  Cédric Moonen Software developer
                  Charting control [v1.4]

                  T Offline
                  T Offline
                  toxcct
                  wrote on last edited by
                  #24

                  Cedric Moonen wrote:

                  What kind of drug is that ?

                  i'd better give up there ! lol

                  [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                  1 Reply Last reply
                  0
                  • J Jhony george

                    hai all, about 'bool' i got idea... from all ur replies... but what about BOOL..? i am not clear...

                    Born to win...!

                    modified on Tuesday, May 20, 2008 11:57 PM

                    CPalliniC Offline
                    CPalliniC Offline
                    CPallini
                    wrote on last edited by
                    #25

                    BOOL is fully featured integer, for instance, you can do.

                    // WEIRD BOOL (legal) programming
                    BOOL b;
                    b = 1000;
                    b++;

                    You can't do the same with a bool variable. [added] Well, I made a sanity check, and actually VC++ compiler gives just a warning on the following code

                    bool b;
                    b = 1000; // Warning here (loss of info), at runtime b becomes true.
                    b++; // at runtime b remains true.

                    [/added] As stated by someone (Rajesh ? toxcct?) this is a reminiscence of the C language gold ol days (C has not the bool keyword). Using an int to represent Yes/No pair is simply a matter of convention (and convenience). :)

                    If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                    This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                    In testa che avete, signor di Ceprano?

                    T 1 Reply Last reply
                    0
                    • C Cedric Moonen

                      toxcct wrote:

                      have you ever worked under linux

                      What kind of drug is that ? ;P

                      Cédric Moonen Software developer
                      Charting control [v1.4]

                      R Offline
                      R Offline
                      Rajesh R Subramanian
                      wrote on last edited by
                      #26

                      I dunno. Azk CPallini. He'z da one who abuzez drug to answer queris realllly fazzt. He haz gud drugz and gud linkz. azk him plz. :laugh:

                      Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                      1 Reply Last reply
                      0
                      • R Rajesh R Subramanian

                        May be toxcct is on drugs today for a change. :laugh:

                        Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                        CPalliniC Offline
                        CPalliniC Offline
                        CPallini
                        wrote on last edited by
                        #27

                        I supposed too. :laugh:

                        If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                        This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                        In testa che avete, signor di Ceprano?

                        1 Reply Last reply
                        0
                        • CPalliniC CPallini

                          BOOL is fully featured integer, for instance, you can do.

                          // WEIRD BOOL (legal) programming
                          BOOL b;
                          b = 1000;
                          b++;

                          You can't do the same with a bool variable. [added] Well, I made a sanity check, and actually VC++ compiler gives just a warning on the following code

                          bool b;
                          b = 1000; // Warning here (loss of info), at runtime b becomes true.
                          b++; // at runtime b remains true.

                          [/added] As stated by someone (Rajesh ? toxcct?) this is a reminiscence of the C language gold ol days (C has not the bool keyword). Using an int to represent Yes/No pair is simply a matter of convention (and convenience). :)

                          If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                          This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                          T Offline
                          T Offline
                          toxcct
                          wrote on last edited by
                          #28

                          but one has to be careful with BOOL, as I stated at the end of my most here[^]

                          CPallini wrote:

                          C has not the bool keyword

                          looks like it has[^]

                          [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                          CPalliniC 1 Reply Last reply
                          0
                          • T toxcct

                            but one has to be careful with BOOL, as I stated at the end of my most here[^]

                            CPallini wrote:

                            C has not the bool keyword

                            looks like it has[^]

                            [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                            CPalliniC Offline
                            CPalliniC Offline
                            CPallini
                            wrote on last edited by
                            #29

                            toxcct wrote:

                            but one has to be careful with BOOL, as I stated at the end of my most here[^]

                            Indeed. C language implicit mapping of non-zero values to true and zero value to false is more coherent.

                            toxcct wrote:

                            looks like it has[^]

                            I saw it, but: shhhhhh, noone, except Nemanja, knows. :-D

                            If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                            This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                            In testa che avete, signor di Ceprano?

                            R 1 Reply Last reply
                            0
                            • CPalliniC CPallini

                              toxcct wrote:

                              but one has to be careful with BOOL, as I stated at the end of my most here[^]

                              Indeed. C language implicit mapping of non-zero values to true and zero value to false is more coherent.

                              toxcct wrote:

                              looks like it has[^]

                              I saw it, but: shhhhhh, noone, except Nemanja, knows. :-D

                              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                              R Offline
                              R Offline
                              Rajesh R Subramanian
                              wrote on last edited by
                              #30

                              CPallini wrote:

                              I saw it, but: shhhhhh, noone, except Nemanja, knows.

                              Oh come on. You are a "C" lover. I would have expected you to know. :-D

                              Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                              CPalliniC 1 Reply Last reply
                              0
                              • R Rajesh R Subramanian

                                CPallini wrote:

                                I saw it, but: shhhhhh, noone, except Nemanja, knows.

                                Oh come on. You are a "C" lover. I would have expected you to know. :-D

                                Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                                CPalliniC Offline
                                CPalliniC Offline
                                CPallini
                                wrote on last edited by
                                #31

                                Well, I'm a traditional-C lover: that fancy new C99 is alien to me. :laugh:

                                If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                                This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                                In testa che avete, signor di Ceprano?

                                J 1 Reply Last reply
                                0
                                • CPalliniC CPallini

                                  Well, I'm a traditional-C lover: that fancy new C99 is alien to me. :laugh:

                                  If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                                  This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                                  J Offline
                                  J Offline
                                  Jhony george
                                  wrote on last edited by
                                  #32

                                  Thanks for ur kind reply to all members whoever particpated in the discussion., by, Manivannan@Congruent

                                  Born to win...!

                                  1 Reply Last reply
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