Here are some definitions of class, struct and union.

class CFoo
{
   // CFoo is a CLASS defined by using 'class' keyword
};

struct SFoo
{
   // SFoo is a CLASS defined by using 'struct' keyword
};

union UFoo
{
   // UFoo is a CLASS defined by using 'union' keyword
};

As you can see, the name of "CFoo", "SFoo", "UFoo" are started by the letter "C", "S" and "U" respectively.
I guess they are short for "Class", "Struct" and "Union".
What is the purpose of writing a name like that? Is it just easy to remember?

 

As you can see, the name of "CFoo", "SFoo", "UFoo" are started by the letter "C", "S" and "U" respectively.
I guess they are short for "Class", "Struct" and "Union".
What is the purpose of writing a name like that? Is it just easy to remember?

It's just a Mnemonic
You can call them any legal name in the computer language but with a large program some sort of naming convention helps you to remember the types, functions and methods.
http://en.wikipedia.org/wiki/Naming_convention_(programming)

 

Except for "Ufoo" I think that might be an insult.





(j/k)

 

It's called Hungarian notation, it's meant to remind you of the type of a variable. The reason that you're having a hard time figuring out why it's useful is because it isn't, and the practice is more commonly discouraged than encouraged.

 

Thanks for the info. I just google it and the article is interesting.
http://en.wikipedia.org/wiki/Hungarian_notation

 

Some people are pretty anal about code styles in large projects. The Linux kernel is a good example, to have code accepted in the main source tree it doesn't have to follow his coding style but if you don't it's unlikely anyone one will sign-off your patch until you do.

One of the good things about an IDE like MPLABX/NetBeans is that it will auto-format code to the style of your choice.