<commit_before>Exercise solutions from Kernighan & Ritchie's "The C Programming Language (2nd ed)".

Compile with "cc [filename]".<commit_msg>Update README to use make.<commit_after>Exercise solutions from Kernighan & Ritchie's "The C Programming Language (2nd ed)".

Compile with "make [exercise]".
{'fraction_non_alphanumeric': 0.10367892976588629, 'fraction_numerical': 0.006688963210702341, 'mean_word_length': 6.142857142857143, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5780012', 'n_tokens_mistral': 97, 'n_tokens_neox': 89, 'n_words': 33}