Variable names

All programs use variables so it is important to adopt naming convensions when defining them. If variables are named poorly then people reading the code will not understand it. The more descriptive the name the eaiser the code will be to maintain.

A lot of programming languages have special naming conventions to help programmers understand each others code. These conventions can be ignored but other programmers will tend to unwiling to spend extra time trying to understand your code.

There is a big difference between syntatically correct code and code which is easy to read. For example

a = b * c

or

fileSize = recordSize * numberOfRecords

It is easy to see which one is more readable!