When should you use a class vs a struct in C++?

Question

In what scenarios is it better to use a struct vs a class in C++?

Answer 1

Class.

Class members are private by default.

class test_one {
    int main_one();
};

Is equivalent to

class test_one {
  private:
    int main_one();
};

So if you try

int two = one.main_one();

We will get an error: main_one is private because its not accessible. We can solve it by initializing it by specifying its a public ie

class test_one {
  public:
    int main_one();
};

Struct.

A struct is a class where members are public by default.

struct test_one {
    int main_one;
};

Means main_one is private ie

class test_one {
  public:
    int main_one;
};

I use structs for data structures where the members can take any value, it's easier that way.