Classes constructors and getter and setter

Victor89 (62)
I tried to create an example to practice classes and I am a little bit confused.
As I understood:

Constructor are used to initialize classes.

And the getter and setter makes data accessible without making it public.

I am still a little bit confused:
What are the differences between constructors and setter and getter?

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         class Unit
        {
            protected int health;

            public int GetHealth()
            {
                return health;
            }

            public void SetHealth(int p_health)
            {
                health = p_health;
            }

            public Unit() // default constructor
            {
                health = 100;
            }

            public Unit(int p_fuel)
            {
                health = p_fuel;
            }
        };

        class Footman : Unit
        {
            private int weapons { get; set; } // what could be the usage of this

            public Footman(int damage)
            {
                weapons = damage;
            }

        };
Peter87 (11226)
A constructor is called when the object is created. The constructor should initialize all member variables so that the object is ready to use.

A getter is a function that returns the value of a member variable.

A setter is a function that changes the value of a member variable.

Is the code that you have posted C#?
Victor89 (62)
Is it is C#, how did you know?

Also the differences are little.
Peter87 (11226)
How did I know? I didn't know for sure because I have never used C# but I have seen people posting C# code here before. The giveaway was that public/protected/private was applied for each member and the use of the { get; set; } syntax.
Victor89 (62)
Yes it's obvious protected: int health in c++ instead of what I wrote. I should have adapted the code for c++ since this is a c++ forum, but at a first glance I thought that the differences are not very noticeable.
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