0x00-hello_world 0x0A-argc_argv 0x0B-malloc_free 0x10-variadic_functions 0x09-static_libraries 0x01-variables_if_else_while 0x02-functions_nested_loops 0x03-debugging 0x04-more_functions_nested_loops 0x07-pointers_arrays_strings 0x08-recursion 0x05-pointers_arrays_strings 0x06-pointers_arrays_strings 0x0F-functions_pointers 0x0D-preprocessor 0x0C-more_malloc_free 0x0E-structures_typedef