You can use Unified Modeling Language (UML) class diagrams to develop structural features in C/C++ applications.
You can create C/C++ classes and data types, navigate to the source code files, and develop C/C++ classes and data types directly from an open class diagram.
The following is from the other topic: You can use class diagrams to examine the structure and relationships of C/C++ classes and data types in C/C++ applications.
A class diagram depicts some or all the classes or components in an application which you can use to examine, understand, and collaborate on your application.