- Series: International Computer Science Series
- Paperback: 456 pages
- Publisher: Addison-Wesley; 1 edition (June 4, 1997)
- Language: English
- ISBN-10: 0201419505
- ISBN-13: 978-0201419504
- Product Dimensions: 6.8 x 8.6 x 9.2 inches
- Shipping Weight: 1.7 pounds
- Average Customer Review: 1 customer review
- Amazon Best Sellers Rank: #3,808,308 in Books (See Top 100 in Books)
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Functional C (International Computer Science Series) 1st Edition
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From the Inside Flap
The Computer Science Departments of many universities teach a functional language as the first programming language. Using a functional language with its high level of abstraction helps to emphasize the principles of programming. Functional programming is only one of the paradigms with which a student should be acquainted. Imperative, Concurrent, Object-Oriented, and Logic programming are also important. Depending on the problem to be solved, one of the paradigms will be chosen as the most natural paradigm for that problem.
This book is the course material to teach a second paradigm: imperative programming, using C as the programming language. The book has been written so that it builds on the knowledge that the students have acquired during their first course on functional programming, using SML. The prerequisite of this book is that the principles of programming are already understood; this book does not specifically aim to teach Iproblem solvingI or IprogrammingI. This book aims to:
Familiarise the reader with em imperative programming as another way
of implementing programs. The aim is to preserve the programming
style, that is, the programmer thinks functionally while implementing an
Provide understanding of the differences between functional and
imperative programming . Functional programming is a high level
activity. The ordering of computations and the allocation of storage
are automatic. Imperative programming, particularly in C, is a low level
activity where the programmer controls both the ordering of
computations and the allocation of storage. This makes imperative
programming more difficult, but it offers the imperative programmer
opportunities for optimisations that are not available to the
Familiarise the reader with the syntax and semantics of ISO-C,
especially the power of the language (at the same time stressing
that power can kill). We visit all dark alleys of C, from void *
to pointer arithmetic and assignments in expressions.
On occasions, we use other languages
(like C++ and Pascal) to illustrate concepts of imperative languages
that are not present in C. C has been chosen because it is a de facto
standard for imperative programming, and because its low level
nature nicely contrasts with SML. Those who want to learn, for
example, Modula-2 or Ada-95
afterwards should not find many difficulties.
Reinforce the principles of programming and problem
solving. This is facilitated by the
use of three different languages (mathematics, a functional
language, and an imperative language). The fact that these widely
differing languages have common aspects makes the idea that
programming principles exist and that they are useful quite
Reinforce the principle of abstraction. Throughout the book
we encourage the student to look for more abstract solutions, for
example, by viewing the signature of a function as an abstraction of
its purpose, by using procedural abstractions (in particular higher
order functions) early on, and by using data abstraction.
Guide the student from specification and mathematics to
implementation and software engineering.
In the first chapters the emphasis is on
writing correct functions and as we make progress the emphasis
gradually shifts to transforming correct functions into efficient
and reusable functions. Clean interfaces are of paramount
importance, and are sacrificed for better efficiency
only as a last resort.
Each problem in this book is solved in three steps:
A specification of the problem is made.
An appropriate algorithm is found to deliver solutions that
satisfy the specification.
The algorithm is implemented as efficiently as possible. Throughout
the book, the emphasis is on this third step.
The language of mathematics is used to specify the problems. This includes the basics of set theory and logic. The student should have some familiarity with the calculi of sets, predicate logic, and propositional logic. This material is taught at most universities during a first course on discrete mathematics or formal logic.
The appropriate algorithm is given in SML. SML is freely available for a range of platforms (PC's, UNIX work stations, Apple), and is therefore popular as a teaching language. As many functional languages are not too different from SML, an appendix gives a brief review of SML for those familiar with any of the other main stream functional languages, such as Miranda, Haskell, Clean, or Scheme.
As the target language to implement solutions in an imperative style we have chosen C. The choice to use C and not C++ was a difficult one. Both languages are mainstream languages, and would therefore be suitable as the target language. We have chosen C because it more clearly exposes the low level programming. To illustrate this consider the mechanisms that the languages provide for call by reference. In C, arguments must be explicitly passed as a pointer. The caller must pass the address, the callee must dereference the pointer. This in contrast with the call by reference mechanism of C++ (and Pascal and Modula-2). This explicit call by reference is a didactical asset as it clearly exposes the model behind call by reference, and its dangers (in the form of unwanted aliases).
As this book is intended to be used in a first year course, only few assumptions were made about prior knowledge of the students. Reasoning about the correctness of programs requires proof skills, which students might not have acquired at this stage. Therefore we have confined all proofs to specially marked exercises. To distinguish the programming exercises from the exercises requiring a proof, we have marked the latter with an asterisk. We are confident that the book can be used without making a single proof. However we would recommend the students to go through the proofs on a second reading. The answers to one third of the exercises are provided in Appendix A.
The student should have an understanding of the basic principles of computing. This would include base 2 arithmetic and the principles of operation of the von Neumann machine. A computer appreciation course would be most appropriate to cover this material. The book contains examples from other areas of computer science, including data bases, computer graphics, the theory of programming languages, and computer architecture. These examples can be understood without prior knowledge of these areas. 0201419505P04062001
From the Back Cover
Functional C teaches how to program in C, assuming that the student has already learnt how to formulate algorithms in a functional style. By using this as a starting point, the student will become a better C programmer, capable of writing programs that are easier to comprehend, maintain and that avoid common errors and pitfalls.Features:
- provides a deep understanding of the differences between functional and imperative programming
- problem solving techniques used throughout with a wealth of examples and exercises
- uses elementary program transformation techniques to convert rigorous functional designs into efficient imperative code
- extensive coverage of all the important features of ANSI-C
All program code that appears in Functional C is available via ftp - see below.How to find a code fragment?
To access a particular code fragment, use the book to locate the section or subsection in which the code fragment appears, then click on that section in the code index. This will open the appropriate page at the beginning of the section. The code fragment may then be selected using the copy/paste facilities of your browser.
Each chapter is represented by a separate page, so as an alternative to the procedure above you can use the save-as menu of your browser to up-load all code fragments in a particular chapter at once.
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