ako imash

class Bla {
    public:
    int a;
    Bla(int a) {
        this.a = a
    }
}

i vo main imash

main() {
    Bla instanca1 = Bla(20);
    Bla instanca2 = Bla(30);

    cout<<instanca1.a; // ke ispechate 20
    cout<<instanca2.a; // ke ispechate 30
}