C/C++ code generation is the core functionality of MATLAB^® Coder™. Generate code from the app, which you can open with coder, or from the command line, by using the codegen function. The app provides step-by-step guidance through the code generation process, including guidance for best practices, and clear visual aids for the code generation settings and options. The command line workflow enables simple, repeatable, and efficient initiation of code generation. The code generation workflow supports many different data types, including variable-size data and global data. The workflow also supports multiple entry-point (top-level) functions, multisignature MEX function generation, and customization of fundamental properties such as the array layout and array indexing of the generated code. In addition, you can generate code that uses key C++ language features such as classes, namespaces, and function overloading.