The C with Classes 2021 (CC21) Standard

C with Classes is a standard developed to allow for the utility and functionality of C++ classes while also maintaining the simplicity and readability of C. CC21 is targeted towards embedded systems.

Authors

Mit Bailey
Sunip K. Mukherjee

Requirements

• CC programs must be compiled using C++11.
• No C++ (.hpp) headers may be included; only C libraries and/or headers (such as stdio.h) may be used.
• C11-compliant header code files must use the .h file extension.
• C11-compliant source code files must use the .c file extension.
• CC21 source code files must use the .cc file extension.
• CC21 header code files must use the .hcc file extension.

Recommendations

Formatting

Below are listed types of formatting with examples and use cases.

snake_case

• Variables
  int my_int;

• Functions
  void my_function(...) {...}

• Type-Defined Variables (requires _t suffix)
  typedef uint8_t byte_t;

• Type-Defined Struct (requires _t suffix)
  typedef struct {...} my_struct_type_t;

UPPER_SNAKE_CASE

• Constants
  const int MY_CONSTANT = 0;

• Hash-Defines
  #define SOME_VALUE 42

camelCase

• Class Objects
  MyClass classObject;

• Class Variables
  int myInt;
classObject.someValue;

PascalCase

• Class Names
  class MyClass {...};

• Methods (Class Functions)
  int GetValue(...) {...}
classObject.GetValue(...);
MyClass::SomeOperation(...);

Best Practices