K & R indent style

The K&R style is commonly used in C, C++, and other curly brace programming languages. Used in Kernighan and Ritchie's book The C Programming Language, it had its origins in Kernighan and Plauger's The Elements of Programming Style.

When following K&R, each function has its opening brace at the next line on the same indentation level as its header, the statements within the braces are indented, and the closing brace at the end is on the same indentation level as the header of the function at a line of its own.

The blocks inside a function, however, have their opening braces at the same line as their respective control statements; closing braces remain in a line of their own, unless followed by a keyword else or while. Such non-aligned braces are nicknamed "Egyptian braces" (or "Egyptian brackets") for their resemblance to arms in some fanciful poses of ancient Egyptians.