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CuriousTab

CuriousTab

Constructors and Destructors problems

  • 1. Which of the following statement is correct about the program given below? 
    #include<iostream.h> 
class CuriousTab
{
    public:
    CuriousTab()
    {
        cout<< "Curious";
    }
    ~CuriousTab()
    {
        cout<< "Tab";
    }
};
int main()
{
    CuriousTab objTab;
    return 0; 
}

  • Options
  • A. The program will print the output Curious.
  • B. The program will print the output Tab.
  • C. The program will print the output CuriousTab.
  • D. The program will report compile time error.
    • Discuss
  • 2. What will be the output of the following program? 
    #include<iostream.h>
class CuriousTabBase
{   
    public:
    CuriousTabBase()
    {
        cout<< "Base OK. "; 
    }
    ~CuriousTabBase()
    {
        cout<< "Base DEL. "; 
    }
};
class CuriousTabDerived: public CuriousTabBase
{
    public:
    CuriousTabDerived()
    { 
        cout<< "Derived OK. "; 
    }
    ~CuriousTabDerived()
    { 
        cout<< "Derived DEL. "; 
    }
};
int main()
{
    CuriousTabBase *basePtr = new CuriousTabDerived();
    delete basePtr;
    return 0;
}

  • Options
  • A. Base OK. Derived OK.
  • B. Base OK. Derived OK. Base DEL.
  • C. Base OK. Derived OK. Derived DEL.
  • D. Base OK. Derived OK. Derived DEL. Base DEL.
  • E. Base OK. Derived OK. Base DEL. Derived DEL.
    • Discuss
  • 3. What will be the output of the following program? 
    #include<iostream.h> 
class CuriousTab
{
    int x; 
    public:
    CuriousTab(int xx, float yy)
    {
        cout<< char(yy);
    } 
}; 
int main()
{
    CuriousTab *p = new CuriousTab(35, 99.50f);
    return 0; 
}

  • Options
  • A. 99
  • B. ASCII value of 99
  • C. Garbage value
  • D. 99.50
    • Discuss
  • 4. What will be the output of the following program? 
    #include<iostream.h> 
int val = 0; 
class CuriousTab
{
    public: 
    CuriousTab()
    {
        cout<< ++val;
    }
    ~CuriousTab()
    {
        cout<< val--; 
    } 
}; 
int main()
{
    CuriousTab objCuriousTab1, objCuriousTab2, objCuriousTab3;
    {
        CuriousTab objCuriousTab4;
    } 
    return 0;
}

  • Options
  • A. 1234
  • B. 4321
  • C. 12344321
  • D. 12341234
  • E. 43211234
    • Discuss
  • 5. Which of the following statement is correct about the program given below? 
    #include<iostream.h> 
class CuriousTab
{
    int x; 
    public:
    CuriousTab(short ss)
    {
        cout<< "Short" << endl;
    }
    CuriousTab(int xx)
    {
        cout<< "Int" << endl;
    }
    CuriousTab(char ch)
    {
        cout<< "Char" << endl;
    }
    ~CuriousTab() 
    {
        cout<< "Final";
    }
};
int main()
{
    CuriousTab *ptr = new CuriousTab('B');
    return 0; 
}

  • Options
  • A. The program will print the output Short .
  • B. The program will print the output Int .
  • C. The program will print the output Char .
  • D. The program will print the output Final .
  • E. None of the above
    • Discuss
  • 6. Which of the following statement is correct about the program given below? 
    #include<iostream.h> 
class CuriousTab
{
    int *p; 
    public:
    CuriousTab(int xx, char ch)
    {
        p  = new int(); 
        *p = xx + int(ch); 
        cout<< *p;
    }
    ~CuriousTab() 
    {
        delete p;
    }
};
int main()
{
    CuriousTab objCuriousTab(10, 'B'); 
    return 0;
}

  • Options
  • A. The program will print the output 76.
  • B. The program will print the output 108.
  • C. The program will print the output garbage value.
  • D. The program will report compile time error.
    • Discuss
  • 7. Which of the following statement is correct about the program given below? 
    #include<iostream.h> 
class Tab
{
      int x; 
    public:
      Tab();
      void Show() const;
      ~Tab(){}
};
Tab::Tab()
{
    x = 5;
}
void Tab::Show() const
{
    cout<< x;
}
int main()
{
    Tab objB;
    objB.Show();
    return 0; 
}

  • Options
  • A. The program will print the output 5.
  • B. The program will print the output Garbage-value.
  • C. The program will report compile time error.
  • D. The program will report runtime error.
    • Discuss
  • 8. What will be the output of the following program? 
    #include<iostream.h>
class CuriousTabBase
{   
    public:
    CuriousTabBase()
    {
        cout<< "Base OK. "; 
    }
};
class CuriousTabDerived: public CuriousTabBase
{
    public:
    CuriousTabDerived()
    { 
        cout<< "Derived OK. "; 
    }
    ~CuriousTabDerived()
    { 
        cout<< "Derived DEL. "; 
    }
};
int main()
{
    CuriousTabBase    objB;
    CuriousTabDerived objD;
    objD.~CuriousTabDerived();
    return 0;
}

  • Options
  • A. Base OK. Derived OK. Derived DEL.
  • B. Base OK. Base OK. Derived OK. Derived DEL.
  • C. Base OK. Derived OK. Derived DEL. Derived DEL.
  • D. Base OK. Base OK. Derived OK. Derived DEL. Derived DEL.
  • E. The program will report compile time error.
    • Discuss
  • 9. What will be the output of the following program? 
    #include<iostream.h> 
class CuriousTabBase
{
    public:
    int x, y;
    CuriousTabBase(int xx = 0, int yy = 5)
    {
        x = ++xx; 
        y = --yy;
    }
    void Display()
    {
        cout<< --y;
    } 
    ~CuriousTabBase(){} 
};
class CuriousTabDerived : public CuriousTabBase
{
    public:
    void Increment()
    {
        y++;
    }
    void Display()
    {
        cout<< --y;
    } 
}; 
int main()
{
    CuriousTabDerived objCuriousTab;
    objCuriousTab.Increment();
    objCuriousTab.Display();
    return 0; 
}

  • Options
  • A. 3
  • B. 4
  • C. 5
  • D. Garbage-value
  • E. The program will report compile time error.
    • Discuss
  • 10. Which of the following statement is correct about the program given below? 
    #include<iostream.h> 
class Tab
{
      int x; 
    public:
      Tab();
     ~Tab();
      void Show() const;
};
Tab::Tab()
{
    x = 25;
}
void Tab::Show() const
{
    cout<< x;
}
int main()
{
    Tab objB;
    objB.Show();
    return 0; 
}

  • Options
  • A. The program will print the output 25.
  • B. The program will print the output Garbage-value.
  • C. The program will report compile time error.
  • D. The program will report runtime error.
    • Discuss

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Engineering

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