Be Consistent

If you’re editing code, take a few minutes to look at the code around you and
determine its style. If they use spaces around all their arithmetic
operators, you should too. If their comments have little boxes of hash marks
around them, make your comments have little boxes of hash marks around them
too.

The point of having style guidelines is to have a common vocabulary of coding
so people can concentrate on what you’re saying rather than on how you’re
saying it. We present global style rules here so people know the vocabulary,
but local style is also important. If code you add to a file looks
drastically different from the existing code around it, it throws readers out
of their rhythm when they go to read it. Avoid this.

—Google C++ Style Guide