How many constructors are in the person class above?

Question

Consider the implementation of the following class

class person {
private: 
 int age;
 int getAge();
 void setName(string);
public:
 string name;
 person(int , string);
 person(string);
 person();
 void setAge(int);
 string getName();
}

You're either quizzing us or this is homework. – huu Jul 10 '15 at 20:19 — huu, Jul 10 '15 at 20:19
Is this is a counting puzzle? – Pradhan Jul 10 '15 at 20:19 — Pradhan, Jul 10 '15 at 20:19
Even worse would be if this is a take home exam... – James Adkison Jul 10 '15 at 20:23 — James Adkison, Jul 10 '15 at 20:23
@sdubs177 By the way I was the first who aswered correctly! – Vlad from Moscow Jul 10 '15 at 20:36 — Vlad from Moscow, Jul 10 '15 at 20:36
My hobby: _counting_ – Lightness Races in Orbit Jul 10 '15 at 21:34 — Lightness Races in Orbit, Jul 10 '15 at 21:34

score 3 · Accepted Answer · edited May 23 '17 at 10:24

3

There are 4 or 5 constructors in person.
The 3 you defined yourself, plus the compiler-generated copy constructor.

If C++11 is used, specific rules determine whether or not a move constructor will be generated for you, see here and here.

edited May 23 '17 at 10:24

Community

1
1

answered Jul 10 '15 at 20:19

Beta Carotin

1,659
1
10
27

move constructor and move assignment are not automatically generated. – NathanOliver Jul 10 '15 at 20:21
1

@NathanOliver Move constructors are automatically generated (under the right conditions) [Conditions for automatic generation of default ctor, copy ctor, and default assignment operator?](http://stackoverflow.com/questions/4943958/conditions-for-automatic-generation-of-default-ctor-copy-ctor-and-default-assi). The C++0x section states the conditions. – James Adkison Jul 10 '15 at 20:26

Vlad from Moscow · Answer 2 · 2015-07-10T20:31:23.387

0

I counted five constructors because I have 5 fingers on my hand.:) However among possible answers

there is no answer with the number 5. So I am thinking whether it is only me who has 5 fingers on the hand or others can not count up to 5.:)

edited Jul 10 '15 at 20:31

answered Jul 10 '15 at 20:26

Vlad from Moscow

301,070
26
186
335

1

There are three kinds of people, those who can count, and the others ;-) – Jarod42 Jul 10 '15 at 20:32
@Jarod42 The question does not ask to explain the selection. It only asks about the number of constructors.:) – Vlad from Moscow Jul 10 '15 at 20:34
Excellent joke-missing! – Lightness Races in Orbit Jul 10 '15 at 21:35

How many constructors are in the person class above?

2 Answers2