Are "n" or "ch" prefixes common prefixes when naming int or char variables in C++?

Are "n" or "ch" prefixes common prefixes when naming int or char variables
in C++?

I'm currently going through learncpp.com's C++ tutorials and I'm seeing
that their variable naming trend has them naming int variables with an "n"
prefix (i.e. int nValue) and "ch" prefixes for char variables (i.e. char
chOperation). Is this something that is commonplace in the industry that I
should form as a habit now?