3. Control Functions - Validation - Errors
Overview
This section covers control structures, data validation techniques, and error handling from the VCE Software Development Study Design.
Key Knowledge Covered
Control Structures: - Sequence - Selection (if, if-else, case/switch) - Iteration/Repetition (for, while, do-while loops)
Data Validation (KK 3.1.10): - Existence checking - Type checking - Range checking
Error Types (KK 3.1.13): - Syntax errors - Logic errors - Runtime errors (overflow, index out of range, type mismatch, divide by zero)
Learning Pathway
Work through the following pages in order:
- What You Need To Know - Core concepts and definitions
- Test Your Knowledge - Quick comprehension questions
- Practical Examples - Worked C# code examples
- Applied Task - Student task sheet with exercises
- Extras - Additional practice questions
Importance
Understanding control structures, validation, and error handling is essential for:
- Writing programs that make decisions and repeat actions
- Ensuring data integrity and preventing invalid input
- Creating robust software that handles errors gracefully
- Debugging and troubleshooting code effectively
Resources
- Nelson/Cengage VCE Software Development 2nd Ed.
- VCAA Study Design Unit 3 Outcome 1