Trailing underscores for member variables in C++

Question

I\'ve seen people use a trailing underscore for member variables in classes, for instance in the renowned C++ FAQ Lite.

I think that it\'s purpose is not to mark var

Answer 1

I am personally a big fan of this guideline: http://geosoft.no/development/cppstyle.html

It includes omitting the m_ prefix, using an underscore suffix to indicate private member variables and dropping the horrid, annoying-to-type habit of using underscores instead of space, and other, more detailed and specific suggestions, such as naming bools appropriately(isDone instead of just done) and using getVariable() instead of just variable() to name a few.