C/C++

Coding

• One-true-brace ident style
• Coding header files

Commenting

• Place Doxygen comments in header files (before declarations of namespaces/classes/structs/typedefs/macros) and main source files (for documenting tools and tests)
• Use double forward slash for short comments in the code

C++

• Mixing C/C++
• Template C++

General

• Don't use non-standard functions, like itoa
• Dynamic loading of shared libraries