KwickClips Cyber Safety and Ethics · 41 sec · free
What does & in a parameter do?
Short answer. Passes the original, not a copy.
What prints without &?
60.
Remember
| By value: works on a copy |
| By reference (&): the original |
The function added five. Why are marks still sixty? K holds the marks. The ampersand passes the original, not a copy. So it becomes sixty five. Without it, it stays sixty. By value works on a copy. By reference changes the original.
This clip is from the full lesson: Functions in C++: Overloading, Default Arguments and Inline — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 9 Information Technology (402), GSEB Std 12 Computer Studies, NIOS Secondary Data Entry Operations (229), NIOS Senior Secondary Computer Science (330)
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