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

#include <vector> 
#include <algorithm> 
#include <iostream> 
 
using namespace std;
 
int main() 
{ 
    vector<int> v(10, 2); 
    if (all_of(v.cbegin(), v.cend(), [](int i){ return i % 2 == 0; })) 
    { 
	cout << "All numbers are even\n"; 
    } 
    else
    {
	cout << "All numbers are not even\n"; 
    }
    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