how to write betty style comment
Betty style for comments is the C89 style.
/* Use this */
Don't use C99-style comments
// Don't use this
The preferred style for long (multi-line) comments is:
/*
* This is the preferred style for multi-line
* comments in C source code.
* Please use it consistently.
*
* Description: A column of asterisks on the left side,
* with beginning and ending almost-blank lines.
*/