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

#include <iostream>
using namespace std;
class A
{
    public:
    A(int n )
    {
        cout << n;
    }
};
class B: public A
{
    public:
    B(int n, double d)
    : A(n)
    {
        cout << d;
    }    
};
class C: public B
{
    public:
    C(int n, double d, char ch)
    : B(n, d)
    {
        cout <<ch;
    }
};
int main()
{
    C c(5, 4.3, 'R');
    return 0;
}

What does the 'sizeof' operator return in C++?

A. Size of a data type in bits

B. Size of a data type in bytes

C. Size of a variable in bytes

D. Size of a variable in bits

Which of the following is not a fundamental data type in C++?

A. Char

B. Float

C. String

D. Double

What is the purpose of the 'static' keyword in C++?

A. To declare a variable with dynamic storage duration

B. To declare a constant

C. To declare a variable with external linkage

D. To declare a variable with static storage duration

What is the difference between '++i' and 'i++' in C++?

A. None of the above

B. They both have the same effect

C. '++i' increments the value of 'i' before returning it, while 'i++' increments the value of 'i' after returning it

D. '++i' increments the value of 'i' after returning it, while 'i++' increments the value of 'i' before returning it