This best-selling, authoritative reference manual provides a complete description of the C language, the run-time libraries, and a style of C programming that emphasizes correctness, portability, and maintainability. Describing the C language more clearly and in more detail than any other book, authors Samuel P. Harbison and Guy L. Steele Jr. provide in a single manual: Standard C - the ANSI/ISO standard now supported by all new C compilers; Traditional C - common practice for twenty years, with millions of lines of code in use every day and the complete Standard and Traditional C run-time libraries. Thoroughly revised and updated, the Fourth Edition adds two important developments: the ANSI/ISO description has been updated with ISO C Amendment 1 (1994), which adds new facilities for writing portable international programs and each language chapter now discusses C++ compatibility, so you can write C programs that will be maximally portable and reusable in C and C++ environments - an important consideration for software developers.