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

#include <iostream>
using namespace std; 
struct A 
{
    int i;
    char j;
    float f;
    void func();
};
void A :: func() {}
struct B 
{
    public:
    int i;
    char j;
    float f;
    void func();
};
void B :: func() {}
int main() 
{
    A a; B b;
    a.i = b.i = 1; 
    a.j = b.j = 'c';
    a.f = b.f = 3.14159;
    a.func();
    b.func();
    cout << "Allocated"; 
    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