- Normal, extreme and exceptional test data
- Syntax, execution and logic errors
- Readability of code (internal commentary, meaningful identifiers, indentation)
Normal, extreme and exceptional test data
For an exam out of 100
- Normal – 78, 45,67, 85, 44
- Extreme – 0, 100
- Exceptional – -89, bob
Syntax, execution and logic errors
Syntax Errors – The rules of the programming language have been broken. E.g. a typing mistake Displya rather than Display
Execution Errors – using Average = total / 0 would give an execution error.
Logic Errors –will only show up when you run the program. Please see below
Counter = 0
Repeat
Counter = counter + 1
Until counter = 0
Readability of code (internal commentary, meaningful identifiers, indentation)
Internal commentary – information about what the program does written by the programmer alongside the actual code. ‘Green in Visual Basic.
Meaningful identifiers – Calling variable names that mean something length or height rather than L or H
Indentation starting parts of the code slightly into the middle of the page making it easier to read and to see selection and iteration.
