You can do auto-indent in Java, PHP, Perl... but not in C/C++, where you're free to embed curly braces etc. in macros, and it's really common to do so.
To make matters worse, you actually need to compile the program in order to determine which macro gets expanded into what amount of braces...
To make matters worse, you actually need to compile the program in order to determine which macro gets expanded into what amount of braces...