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  4. constructor failed??? [modified]

constructor failed??? [modified]

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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
          • 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
            #12

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

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

            1 Reply 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
              #13

              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
              • 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

                      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]

                        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

                            1 Reply Last reply
                            0
                            • 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

                              1 Reply Last reply
                              0
                              • 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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