A more compatible makefile.
Style.
Create & remove test.
Comments.
Pattern matching in print_pairs.
Don't need this struct.
Don't need this string.
Added PRINT_VALUES to print_t and added support to print_pairs().
Avoid code duplication in print_value().
Comment.
Fixed the return value of print_pairs().
Comments are free.
English is hard.
Whitespace.
Updated todo.