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  4. constructor failed??? [modified]

constructor failed??? [modified]

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  • C Cedric Moonen

    Could you please elaborate the problem ? What's wrong ? And please use the "code block" option when posting code (all of that is clearly explained in the posting guidelines).

    Cédric Moonen Software developer
    Charting control [v1.4]

    C Offline
    C Offline
    CPallini
    wrote on last edited by
    #5

    (excluding << and >> operators usage!) He creates a temporary object (calling aa(5)) inside the default constructor, probably he wanted to initialize x with 5 instead. :)

    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

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    0
    • T toxcct

      and WHAT IS the error occuring dude ?! :doh: BTW, i see a problem in your cout statements. cout cannot use the >> operator. it uses << operator only, so change your code into this :

      void print() {
      cout << x << endl;
      }

      and everywhere you're doing such a mistake...

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

      C Offline
      C Offline
      CPallini
      wrote on last edited by
      #6

      He creates a temporary object (calling aa(5)) inside the default constructor (leaving garbage inside x), probably he wanted to initialize x with 5 instead. :)

      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 1 Reply Last reply
      0
      • C CPallini

        He creates a temporary object (calling aa(5)) inside the default constructor (leaving garbage inside x), probably he wanted to initialize x with 5 instead. :)

        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
        #7

        thanks dear. but i saw your answer, so no need to flood the thread ;P :cool:

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

        C 1 Reply Last reply
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        • D dealon

          Hello all. I have this code with something error occured: //------------------------------------------ #include "iostream" using namespace std; class aa { public: aa() { aa(5); } aa(int t) { x = t; } void print() { cout << x << endl; } private: int x; }; int main() { aa t; t.print();//this can't output "5", why? return 0; } ///--------------------------- As is descriped above, thanks in advance!

          If we dream, every thing is possible!

          modified on Thursday, June 5, 2008 3:31 AM

          S Offline
          S Offline
          ShilpiP
          wrote on last edited by
          #8

          Is This program working ???

          cout>>x>>endl;
          cin<<ch;

          try using debuging than you find that why x is not giving right output :) #include "stdafx.h" #include <iostream> using namespace std;

          class aa
          {

          public:
          
          	aa(int t = 5)
          	{
          		x = t;
          	}
          	void print()
          	{
          		cout<<x <<endl;
          	
          	}
          private:
          	int x;
          

          };
          int main(int argc, char* argv[])
          {
          aa t;
          t.print();
          cout<<"---------------------"<<endl;

          aa t1(4);
          t1.print();
          char ch;
          cin>>ch;
          
          
          return 0;
          

          }

          Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

          modified on Thursday, June 5, 2008 3:41 AM

          T D 2 Replies Last reply
          0
          • T toxcct

            thanks dear. but i saw your answer, so no need to flood the thread ;P :cool:

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

            C Offline
            C Offline
            CPallini
            wrote on last edited by
            #9

            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ ;P ~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            toxcct wrote:

            so no need to flood the thread

            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ ;P ~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

            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

            H 1 Reply Last reply
            0
            • C CPallini

              You made a mistake in the default constructor. Can you spot it? BTW: The correct method is

              class aa
              {
              public:
              aa():x(5)
              {
              }
              //...
              };

              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

              D Offline
              D Offline
              dealon
              wrote on last edited by
              #10

              Thank you Pallini.I got it... But i found this code can't work. class aa { public: aa():x(5) { }//... }; it said x(5) is not a base class. Thanks once again! :)

              If we dream, every thing is possible!

              T C 2 Replies Last reply
              0
              • S ShilpiP

                Is This program working ???

                cout>>x>>endl;
                cin<<ch;

                try using debuging than you find that why x is not giving right output :) #include "stdafx.h" #include <iostream> using namespace std;

                class aa
                {

                public:
                
                	aa(int t = 5)
                	{
                		x = t;
                	}
                	void print()
                	{
                		cout<<x <<endl;
                	
                	}
                private:
                	int x;
                

                };
                int main(int argc, char* argv[])
                {
                aa t;
                t.print();
                cout<<"---------------------"<<endl;

                aa t1(4);
                t1.print();
                char ch;
                cin>>ch;
                
                
                return 0;
                

                }

                Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

                modified on Thursday, June 5, 2008 3:41 AM

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

                Shilpi Boosar wrote:

                cout>>x>>endl;cin<<ch;

                you're not serious, are you ? :~ X| when you don't know what you're talking about, please avoid posting crap, that will avoid the question poster to be confused at last.

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

                D S 2 Replies Last reply
                0
                • S ShilpiP

                  Is This program working ???

                  cout>>x>>endl;
                  cin<<ch;

                  try using debuging than you find that why x is not giving right output :) #include "stdafx.h" #include <iostream> using namespace std;

                  class aa
                  {

                  public:
                  
                  	aa(int t = 5)
                  	{
                  		x = t;
                  	}
                  	void print()
                  	{
                  		cout<<x <<endl;
                  	
                  	}
                  private:
                  	int x;
                  

                  };
                  int main(int argc, char* argv[])
                  {
                  aa t;
                  t.print();
                  cout<<"---------------------"<<endl;

                  aa t1(4);
                  t1.print();
                  char ch;
                  cin>>ch;
                  
                  
                  return 0;
                  

                  }

                  Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

                  modified on Thursday, June 5, 2008 3:41 AM

                  D Offline
                  D Offline
                  dealon
                  wrote on last edited by
                  #12

                  Thans Shilpi. I'm so sorry.It's my fault. I have edited my post... :)

                  If we dream, every thing is possible!

                  S 1 Reply Last reply
                  0
                  • D dealon

                    Thank you Pallini.I got it... But i found this code can't work. class aa { public: aa():x(5) { }//... }; it said x(5) is not a base class. Thanks once again! :)

                    If we dream, every thing is possible!

                    T Offline
                    T Offline
                    toxcct
                    wrote on last edited by
                    #13

                    it's because in this class, you don't define a x member...

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

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                    0
                    • T toxcct

                      Shilpi Boosar wrote:

                      cout>>x>>endl;cin<<ch;

                      you're not serious, are you ? :~ X| when you don't know what you're talking about, please avoid posting crap, that will avoid the question poster to be confused at last.

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

                      D Offline
                      D Offline
                      dealon
                      wrote on last edited by
                      #14

                      Sorry toxcct.It's my fault. I have edited my post. Thanks youtoxcct.

                      If we dream, every thing is possible!

                      1 Reply Last reply
                      0
                      • D dealon

                        Thank you Pallini.I got it... But i found this code can't work. class aa { public: aa():x(5) { }//... }; it said x(5) is not a base class. Thanks once again! :)

                        If we dream, every thing is possible!

                        C Offline
                        C Offline
                        CPallini
                        wrote on last edited by
                        #15

                        In my sample

                        //...

                        was the concise notation for

                        aa(int t)
                        {
                        x = t;
                        }
                        void print()
                        {
                        cout << x << endl;
                        }
                        private:
                        int x;
                        };

                        :)

                        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

                        1 Reply Last reply
                        0
                        • T toxcct

                          Shilpi Boosar wrote:

                          cout>>x>>endl;cin<<ch;

                          you're not serious, are you ? :~ X| when you don't know what you're talking about, please avoid posting crap, that will avoid the question poster to be confused at last.

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

                          S Offline
                          S Offline
                          ShilpiP
                          wrote on last edited by
                          #16

                          I think now you got the answer why i write that code. :)

                          Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

                          T D 2 Replies Last reply
                          0
                          • D dealon

                            Thans Shilpi. I'm so sorry.It's my fault. I have edited my post... :)

                            If we dream, every thing is possible!

                            S Offline
                            S Offline
                            ShilpiP
                            wrote on last edited by
                            #17

                            Its ok dealon :) He also dont know about this.

                            Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

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                            • S ShilpiP

                              I think now you got the answer why i write that code. :)

                              Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

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

                              nope. i still don't understand why you used the wrong operators... cout use <<, not >>

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

                              S 1 Reply Last reply
                              0
                              • S ShilpiP

                                I think now you got the answer why i write that code. :)

                                Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

                                D Offline
                                D Offline
                                dealon
                                wrote on last edited by
                                #19

                                Thank you very much, Shilpi. :)

                                If we dream, every thing is possible!

                                S 1 Reply Last reply
                                0
                                • T toxcct

                                  nope. i still don't understand why you used the wrong operators... cout use <<, not >>

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

                                  S Offline
                                  S Offline
                                  ShilpiP
                                  wrote on last edited by
                                  #20

                                  Actually he write the wrong code and I just do write his wrong code to explain him where he is wrong.:) I just explain him that his code is not working. LOL :laugh:

                                  Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

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                                  • D dealon

                                    Thank you very much, Shilpi. :)

                                    If we dream, every thing is possible!

                                    S Offline
                                    S Offline
                                    ShilpiP
                                    wrote on last edited by
                                    #21

                                    Most Welcome :)

                                    Yes U Can ...If U Can ,Dream it , U can do it ...ICAN

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                                    • C CPallini

                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ ;P ~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

                                      toxcct wrote:

                                      so no need to flood the thread

                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~ ;P ~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

                                      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

                                      H Offline
                                      H Offline
                                      Hamid Taebi
                                      wrote on last edited by
                                      #22

                                      Oh what happend for your thread I give you 5 but I think it needs to repair. :laugh:

                                      C 1 Reply Last reply
                                      0
                                      • H Hamid Taebi

                                        Oh what happend for your thread I give you 5 but I think it needs to repair. :laugh:

                                        C Offline
                                        C Offline
                                        CPallini
                                        wrote on last edited by
                                        #23

                                        Thanks my friend. Anyway I don't bother if people don't appreciate my humour. :)

                                        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

                                        1 Reply Last reply
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