Question

I’ve seen several occurrences in tutorials where i variables with an “m” in front of the actual name.
At first I thought it meant “my” but after really keeping a lookout for these “m”‘s I’m no longer sure what it means. Does anyone know where this convention comes from?

Answer 1

It’s commonly used to mean that variable is a member of class. For example it’s useful in situations like this:

someclass::somefunc()
{
...
.
.
  m_myvar = 1;
  lvar = 2;
.
.
.
}

You can tell at a glance that m_myvar is a member of someclass but lvar is not.