Classes and Objects in C++
practice.

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

#include <stdio.h> 
#include<iostream> 
using namespace std;
int main()
{
    int x = 5, y = 5, z;
    x = ++x; y = --y;
    z = x + ++x;
    cout << z;
    return 0;
}

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

#include <iostream>
#include <string>
using namespace std;
class B
{
	int b;
     public:
	B(){}
	B(int i){
		b = i;
	}
	int show(){
		return b;
	}
};
 
class C
{
	B b;
     public:
	C(int i){
		b = B(i);
	}
	friend void show();
};
 
void show()
{
	C c(10);
	cout<<"value of b is: "<<c.b.show()<<endl;
}
 
int main(int argc, char const *argv[])
{
	show();
	return 0;
}

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

#include 
using namespace std;
class CDummy
{
    public:
    int isitme (CDummy& param);
};
int CDummy::isitme (CDummy& param)
{
    if (¶m == this)
        return true;
    else
        return false;
}
int main ()
{
    CDummy a;
    CDummy *b = &a;
    if (b->isitme(a)) 
    {
        cout << "execute";
    }
    else
    {
        cout<<"not execute";
    }
    return 0;
}

How are types therein user-defined conversion?

What is string objects in C++?

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

#include <iostream>
#include <string>
using namespace std;
class A
{
	static int a;
    public:
	void show()
        {
		a++;
		cout<<"a: "<<a<<endl;
	}
};
 
int A::a = 5;
 
int main(int argc, char const *argv[])
{
	A a;
	return 0;
}

Pick out the other definition of objects.

Where does keyword ‘friend’ should be placed?

Which operator should be overloaded in the following code to make the program error free?

#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<<"Equal";
    }
    else{
 	cout<<"Not Equal";
    }
    return 0;
}

What is a binary operator?

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

#include <iostream>
using namespace std;
class numbers
{
    private:
    int m_nValues[10];
    public:
    int& operator[] (const int nValue);
};
int& numbers::operator[](const int nValue)
{
    return m_nValues[nValue];
}
int main()
{
    numbers N;
    N[5] = 4;
    cout <<  N[5];
    return 0;
}

Pick out the correct statement.

What is the return type of the conversion operator?

Which functions of a class are called inline functions?

What will happen when the function call operator is overloaded?

How many real types are there in complex numbers?

Which of these following members are not accessed by using direct member access operator?

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

#include <iostream>
using namespace std;
int main()
{
    typedef int num;
    typedef char let;
    let w = "steve";
    num a = 10, b = 15;
    num c = a + w;
    cout << c;
    return 0;
}

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

#include <iostream> 
#include <string>
using namespace std; 
int main(int argc, char const *argv[])
{
	char str[10];
	cin>>str;
	cout<<str;
	return 0;
}

When struct is used instead of the keyword class means, what will happen in the program?