For more information on how to write efficient programs, refer to the following books:


The Elements of Programming Style, Second Edition\\
Kernighan & Plauger\\
McGraw-Hill\\
ISBN 0-07-034207-5


Writing Efficient Programs\\
Jon Louis Bentley\\
Prentice-Hall Software Series\\
ISBN 0-13-970244-X


Algorithms in C\\
Robert Sedgewick\\
Addison Wesley\\
ISBN 0-201-51425-7


Data Structures, Algorithms & Software Principles in C\\
Thomas A. Standish\\
Addison Wesley\\
ISBN 0-201-59118-9