When using variable naming if gives you the ability to be consistent when programming. Using class diagrams gives you the ability to look at your code and see if there are any problems that will occur when running said code. Using good programming practices like be consistent with formatting, be consistent with naming conventions, use global sparingly, consolidate literals, don’t assume output formats, check return values for error conditions and comments. If you use these techniques when writing a code it will help in the reusability of the code and make it easier to spot when you have an error in your code.