indent
Change the appearance of a C/C++ program by inserting or deleting whitespace.
TLDR
Format C/C++ source according to the Linux style guide, automatically back up the original files, and replace with the indented versions
$ indent --linux-style [path/to/source.c] [path/to/another_source.c]
Format C/C++ source according to the GNU style, saving the indented version to a different file
$ indent --gnu-style [path/to/source.c] -o [path/to/indented_source.c]
Format C/C++ source according to the style of Kernighan & Ritchie (K&R), no tabs, 3 spaces per indent, and wrap lines at 120 characters
$ indent --k-and-r-style --indent-level3 --no-tabs --line-length120 [path/to/source.c] -o [path/to/indented_source.c]
