C++ Classes: Which are the differences between 'struct' and 'class'?

Q: Which are the differences between struct and class?

A: In C++ programming language, there is no difference between classes defined by using struct or class keywords, except the default access to members and base classes.

• for struct the default access is public;
• for class the default access is private.

Examples

1. Code:

   ---

   struct SFoo : Base
{
  int m_foo;
  void Foo();
};

   ---

   is equivalent to
   
   Code:

   ---

   struct SFoo : public Base
{
public:
  int m_foo;
  void Foo();
};

   ---

2. Code:

   ---

   class CFoo : Base
{
  int m_foo;
  void Foo();
};

   ---

   is equivalent to
   
   Code:

   ---

   class CFoo : private Base
{
private:
  int m_foo;
  void Foo();
};

   ---

See also

• [Article] Dispelling Common C++ Class Myths
• [C++] What are the differences between classes and structs?