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Leeds Office (National HQ)

GBdirect Ltd
Leeds Innovation Centre
103 Clarendon Road
LEEDS
LS2 9DF
West Yorkshire
United Kingdom

consulting@gbdirect.co.uk

tel: +44 (0)870 200 7273
Sales: 0800 651 0338

South East Regional Office

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

consulting@gbdirect.co.uk

tel: +44 (0)870 200 7273
Sales: 0800 651 0338

Please note: Initial enquiries should always be directed to our UK national office in Leeds (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.

3.5. Summary

This chapter has described the entire range of control of flow available in C. The only areas that cause even moderate surprise are the way in which cases in a switch statement are not mutually exclusive, and the fact that goto cannot transfer control to any function except the one that is currently active. None of this is intellectually deep and it has never been known to cause problems either to beginners or programmers experienced in other languages.

The logical expressions all give integral results. This is perhaps slightly unusual, but once again takes very little time to learn.

Probably the most surprising part about the whole chapter will have been to learn of the conditional and comma operators. A strong case could be made for the abolition of the conditional operator, were it not for compatibility with existing code, but the comma operator does have important uses, especially for automatic generators of C programs.

The Standard has not had much effect on the contents of this chapter. Prospective users of C should ensure that they are completely familiar with all of the topics discussed here (except the conditional and comma operators). They are essential to the practical use of the language, and none of the material is hard.