Formal and actual parameters
Computer Studies · Grade 10 · about 40 minutes
length and width are formal; 5 and 3 are actual. The signature is the contract the caller must keep.
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- 9 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Functions and modular programming
- Parameter passing and variable scope
- Why modular programming
- Built-in functions in practice
- Writing a function definition
- Parameters: giving a function data
- Return values: getting a result back
- Functions calling functions
- Formal and actual parameters
- Local variables in practice
- Global variables and constants
- Value-returning and void functions
- Building a modular program
- The roles of functions