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  4. constructor failed??? [modified]

constructor failed??? [modified]

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  • 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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                • 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
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                        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

                        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

                          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]

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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

                            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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