Identifier Naming - Variables
Class members – see chapter: Classes, unions, structures and enumerations
Local variables – general style:
int function() { int local_varable = 0; return 0; }
Function arguments shall be prefixed with an underscore:
int function( int _argument ) { int local_variable = _argument; return 0; }
Rationale: when debugging this allows to easily distinguish function parameters from local parameters.