the element of programing style
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2009-11-15
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The Elements of Programming Style
The following rules of programming style are excerpted from the book “The Elements of
Programming Style” by Kernighan and Plauger, published by McGraw Hill. Here is quote
from the book: “To paraphrase an observation in The Elements of Style by Strunk and
White, the rules of programming style, like those of English, are sometimes broken, even by
the best writers. When a rule is broken, however, you will usually find in the program some
compensating merit, attained at the cost of the violation. Unless you are certain of doing as
well, you will probably do best to follow the rules.”
1. Write clearly– don’t be too clever.
2. Say what you mean, simply and directly.
3. Use library functions whenever feasible.
4. Avoid too many temporary variables.
5. Write clearly – don’t sacrifice clarity for “efficiency.”
6. Let the machine do the dirty work.
7. Replace repetitive expressions by calls to common functions.
8. Parenthesize to avoid ambiguity.
9. Choose variable names that won’t be confused.
10. Avoid unnecessary branches.
11. If a logical expression is hard to understand, try transforming it.
12. Choose a data representation that makes the program simple.
13. Write first in easy-to-understand pseudo language; then translate into
whatever language you have to use.
14. Modularize. Use procedures and functions.
15. Avoid gotos completely if you can keep the program readable.
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