Classes and Objects in C++
practice.

Which of the following operator cannot be overloaded?

Pick the correct statement.

Which is used to define the member of a class externally?

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
ostream & operator<<(ostream & i, int n)
{
    return i;
}
int main()
{
    cout << 5 << endl;
    cin.get();
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
class Box{
    int capacity;
    bool operator<(Box b){
	return this->capacity < b.capacity ? true : false;
    }
public:
    Box(){}
    Box(double capacity){
	this->capacity = capacity;
    }
};
int main(int argc, char const *argv[])
{
    Box b1(10);
    Box b2 = Box(14);
    if(b1 < b2){
	cout<<"Box 2 has large capacity.";
    }
   else{
	cout<<"Box 1 has large capacity.";
    }
    return 0;
}

Which operator a pointer object of a class uses to access its data members and member functions?

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main ()
{
    int a, b;         
    a = 10;           
    b = 4;            
    a = b;           
    b = 7;           
    cout << "a:";
    cout << a;
    cout << " b:";
    cout << b;
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
int main ()
{
  std::string str ("Example.");
  str.back() = '!';
  std::cout << str << endl;
  return 0;
}

Which is the correct example of a unary operator?

In case of non-static member functions how many maximum object arguments a binary operator overloaded function can take?

Which of the following operator can be overloaded?

How to store the large objects in c++ if it extends its allocated memory?

What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
int main ()
{
    string str ("microsoft");
    string::reverse_iterator r;
    for (r = str.rbegin() ; r < str.rend(); r++ )
        cout << *r;
    return 0;
}

How to declare the complex number?

Given the following C++ code. How would you define the < operator for Box class so that when boxes b1 and b2 are compared in if block the program gives correct result?

#include <iostream>
#include <string>
using namespace std;
class Box
{
    int capacity;
    public:
    Box(){}
    Box(double capacity){
        this->capacity = capacity;
	}
};
int main(int argc, char const *argv[])
{
    Box b1(10);
    Box b2 = Box(14);
    if(b1 < b2){
	cout<<"Box 2 has large capacity.";
    }
    else{
	cout<<"Box 1 has large capacity.";
	}
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
using namespace std;
class sample
{
    public:
    sample(int i) : m_i(i) { }
    public:
    int operator()(int i = 0) const 
    { 
        return m_i + i; 
    }
    operator int () const   
    { 
        return m_i; 
    }
    private:
    int m_i;
    friend int g(const sample&);
};
int f(char c)
{
    return c;
}
int main()
{
    sample f(2);
    cout << f(2);
    return 0;
}

What will be the output of the following C++ code?

#include <iostream>
#include <string>
using namespace std;
int main ()
{
  string str ("example.");
  str.front() = 'E';
  cout << str << endl;
  return 0;
}

Which container in c++ will take large objects?

How many types of models are available to create the user-defined data type?

Which concepts does the Pre Increment use?