Computer Science / Unit 7 CS 0363 short lesson, about 20 seconds
The Reference Variable
Captions available
The idea
A reference variable holds a memory address rather than a value — sized to the machine's word — because a composite value that grows may outgrow its original location.
In practice
A contact card storing a street address, not the house, survives the household's remodeling.
Where people slip
The C-language mechanism behind the idea was video 0194's pointer.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
- Nothing yet depends on this.
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