C++ Answers

Complete the given code to get the output shown below:-

Base1

Base2

#include<iostream>

using namespace std;

class Base1 {

 public:

     void display()

     { cout << " Base1"<< endl; }  };

class Base2 {

public:

    void display()

     { cout << "Base2"<<endl"; } };

class Derived: public Base1, public Base2 {

   public:

 };

int main()

{

   Derived d;

   return 0;

} 

Write the parameterized constructor for all the classes in the hierarchy.

class A

{ int a;}

Class B:public virtual A

{int b;}

Class C:public virtual A

{int c; }

Class D:public b,public C

{int d;}

Consider the class hierarchy shown below.

class A

{  int a;

protected:

int b;

public:

int c;   };

class B: protected A

{  };

Class C: public B

{   };

Which data members of class A are accessible

- in class B       

-in class C       

-in main function 

Justify your answer.

Include the function calls at appropriate places in the given program, to get the output as shown below

In base

In derived

#include<iostream>

using namespace std;

class base

{ int b;

protected:

void display(){cout<<"In base\n";}

};

class derived:public base

{ int d;

  public:

void display(){ cout<<"In derived\n";}

};

int main()

{ derived D;

   return 0;

}

Consider the code given below.

[Assume all the header files and namespaces included.]

How many times the following are invoked:

I) Default constructor

II) Parameterized constructor

III)  Copy constructor

IV) Destructor

class test

{    int a;

public:

test(){a=0;}

test(int x) {a=x;}

test(const test &T){a=T.a;}

~test(){ }

test add(test X)

{ test T;

      T.a=a+X.a;

      return 0;

}

};

int main()

{  test t1(5),t2(10),t3;

   t3=t1.add(t2);

   return 0;

}

Consider following code and state the order of execution constructors and order of execution of destructors.

class C: public A, virtual public B

{    public:

C( ):A( ),B( )

{

cout<<”c class constructor”;

}

};

Include the definition for the function ‘max_age’, in the program given below. The function compares the data member age of the objects P1 and P2 and returns the object having higher value for age.

class person

{ int age;

 public:

person(int a){age=a;}

};

int main()

{ person P1(1.5);

  person P2(2.5);

  person P3=P1.max_age(P2);

 }

Find the errors in the following program and correct them.

[Assume the necessary header files and namespaces included

class test

{   static int x;

    int y;

public:

    test( ){x=0;y=0;}

        static void display()

        { cout<<x<<”\t”<<y<<endl; }

        void output()

        {cout<<x<<”\t”<<y<<endl;}

 };

int main()

{  test T1;

   T1.display();

   test::output();

   return 0;

}

Declares an array of 20 components; initializes list[0] to 4 and list[1] to 7; all other components are initialized to 0.

An array is type of data structure that stores the elements in contiguous block of memory, create an array with name "list" and size of an array is N. your task is to print the array elements in an reverse order.

list-[1,2,3,4,5)

output 5,4,3,2,1

Note: use function concept to process the array elements and print it in the reverse order.

Reverse array has the following parameter

int list[n]

return int