Best coding practices.

• Always name your variables and functions with the utmost care and explain them thoroughly.
• Keep documentation concise but descriptive.
• The reading time for programs is much more than the writing time. Hence, the code must be such that the reading is easier to do. A little more time spent in making the code lucid goes a long way in saving time later.
• Each function must do only one task but do it well.
• Treat each function as a BlackBox- each function must hide something.
• Keep the connections simple. Avoid global variables wherever possible.
• If you use global variables, document them thoroughly. Not doing so will cause side effects.
• The quality of the test data is more important than its quantity.
• Program testing can show the presence of bugs, but never their absence. You cannot ever guarantee 100% correct code.

Adapted from the book Data Structures and Program Design in C