How to correctly override functions and types when inheriting a class?

Question

C++ / C#

Good day!
I'm trying to redefine the function and type of the variable when inheriting a class.
Actually code:

#include <stdio.h>
#include <iostream>
#include <typeinfo>

class A {
public:
    A(){};
    ~A(){};
    
    typedef int custom;
    
    custom num = 1;
    
    int get() {
        return 1;
    }
    void print() {
        std::cout << get() << " " << typeid(num).name() << "\n";
    }
};
class B : public A {
public:
    B() : A(){};
    ~B(){};
    
    typedef float custom;
    
    int get() {
        return 2;
    }
};

int main() {
    B b;
    b.print();

    return 0;
}

I need it to 2 fdisplay , but now it displays 1 i.
I'm trying to achieve this without overriding the function. get
Is it possible to do this? If so, how?

Answer 1

Yes, it can be done, but you need to use templates. Something like:

#include <stdio.h>
#include <iostream>
#include <typeinfo>

template <class T>
class A {
public:
    A(){};
    ~A(){};
    
    typedef T custom;
    
    custom num = 1;
    
    T get() {
        return num;
    }
    void print() {
        std::cout << get() << " " << typeid(num).name() << "\n";
    }
};

class B : public A<float> {
public:
    B() : A() { num = 2.f; };
    ~B(){};
};

int main() {
    B b;
    b.print();

    return 0;
}

PS
I just tweaked the author's code a bit...