C++ constructor under various access specifiers

Question

I was asked to "fill in the blanks to declare a class Person with one private member variable age, and a constructor." The words that I unnecessarily capitalized were where the blanks were in the correct answer below.

CLASS Person {
PRIVATE:
int age;
PUBLIC:
Person(int a) {
age = a;
};

I've noticed that the constructor is under the public access specifier.
Would it be incorrect to switch the third blank (PUBLIC) to private?

According to https://stackoverflow.com/questions/30995942/do-constructors-always-have-to-be-public constructors can be public, private, protected or default.

Answer 1

Constructor can be private, public, protected also... So use it according to the need..