Site Sections => About Us | Consultancy | Training | Software | Publications | Open Source | Support | Open Standards | FAQ | Jobs
Site Style Info

7.5. Exercises

These exercises are intended to test only a basic understanding of the preprocessor, suitable for a beginner. Many users will never need a more detailed understanding.

Exercise 7.1. How would you arrange that the identifier MAXLEN is replaced by the value 100 throughout a program?

Exercise 7.2. What is likely to cause problems in a definition of the form #define VALUE 100+MAXLEN?

Exercise 7.3. Write a macro called REM which takes two integer arguments and ‘returns’ the remainder when the first is divided by the second.

Exercise 7.4. Repeat the last example, but use casts so that any arithmetic type of argument may be used, assuming that there are no overflow problems.

Exercise 7.5. What do the <> brackets around a filename in a #include directive signify?

Exercise 7.6. What would "" mean in place of the <>?

Exercise 7.7. How would you use the preprocessor to select implementation-specific fragments of a program?

Exercise 7.8. What sort of arithmetic does the preprocessor use?

The C Book

This book is published as a matter of historical interest. Please read the copyright and disclaimer information.

GBdirect Ltd provides up-to-date training and consultancy in C, Embedded C, C++ and a wide range of other subjects based on open standards if you happen to be interested.


West Yorkshire Office

GBdirect Ltd
Bradford Design Exchange
34 Peckover Street
BRADFORD
BD1 5BD
West Yorkshire
United Kingdom

consulting@gbdirect.co.uk

Training: 0800 651 0338
General: +44 (0)870 200 7273
Finance: +44 (0)1353 615 174

Please call between 0900 and 1700 (UK time) on Monday to Friday


South East Regional Office

GBdirect Ltd
18 Lynn Rd
ELY
CB6 1DA
Cambridgeshire
United Kingdom

consulting@gbdirect.co.uk

Training: 0800 651 0338
General: +44 (0)870 200 7273
Finance: +44 (0)1353 615 174

Please call between 0900 and 1700 (UK time) on Monday to Friday


Please note:
Non-training enquiries should be directed, initially, to our UK national office in Bradford (West Yorkshire), even if the enquiry concerns services delivered in London or South/East England. Clients in London and the South East will typically be handled by staff working in the London or Cambridge areas.