If you want to use those functions like that ( calling selectLineOne statically )
You will need to modify like so ( using my previous example ).
class A{
public:
static void MethodA( void );
static bool FunctionB( void );
static bool FunctionC( int i_A );
};
the cpp stays the same ( should be fine ).
and you use the functions like
A::MethodA();
bool b_A = A::FunctionB();
bool b_B = A::FunctionC( 4 );