The American author's book is written specifically for programmers who are fluent in one of the procedural programming languages, such as Pascal, PL1, Algol 60, Simula 67, Algol 68, Fortran or Ada. Particular attention is paid to the most complex means of the C language. The style and discipline of programming, data abstraction, preprocessor, tools used in C programming, parallel programming, UNIX operating system are considered. A large number of examples taken from real programs are given. The book includes an appendix with the expected changes in the C language due to the preparation of the language standard.