Warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11?

I have this code

class Move
{
    public:
        Move()
        {
            name = "";
            type_num = 18;
            power = 0;
            accuracy = 0;
            type = "???";
        }

        Move(string a, int b, int c, int d)
        {
            name = a;
            type_num = b;
            power = c;
            accuracy = d;
            /*lines of code to give type a string variable depending on the value of type_num*/
        }

    private:
        string name, type;
        int type_num, power, accuracy;
};

class Moveset
{
    public:
        Moveset()
        {
        }               
    private:
        Move slot1{"MOVE 1", rand() % 18, 10*(rand() % 15 + 1), 5 * (rand() % 11 + 10)};
};

And the compiler gave me this Warning for declaring the object slot1 under the private section in class Moveset.

464 83  C:\Users\N\Desktop\C++\Poke\Poke.cpp    [Warning] non-static data member initializers only available with -std=c++11 or -std=gnu++11
464 15  C:\Users\N\Desktop\C++\Poke\Poke.cpp    [Warning] extended initializer lists only available with -std=c++11 or -std=gnu++11
464 83  C:\Users\N\Desktop\C++\Poke\Poke.cpp    [Warning] extended initializer lists only available with -std=c++11 or -std=gnu++11

Although it gave me the warning but apparently it didnt affect the programme running. Does it actually affect anything? and what am I doing wrong here?

Edit: And what is the diifference between a static member initializer and non-static member initializer?

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