c++类和结构体的区别

实际上c++的类，最后也是转为结构体实现的。主要区别：

• All members of a struct are public by default
• All members of a class are private by default
  在什么情况下使用：
  We use structs only when we want a simple type with little or no methods
  and direct access to the data members (as a matter of style)