KwickClips C · 44 sec · free
Which storage classes start at zero?
Short answer. static and extern.
What does register ask for?
Speed.
Four classes
| Class | Default | Lives |
|---|---|---|
| auto | garbage | block |
| register | garbage | block |
| static | 0 | whole run |
| extern | 0 | whole run |
Remember
| auto, register: garbage |
| static, extern: zero |
C has four storage classes. Know them all? Here are four. Auto is the normal local. Register asks for speed. Static remembers. Extern shares a global. Remember. Auto and register hold garbage. Static and extern start at zero.
This clip is from the full lesson: Scope, Lifetime and Storage Classes — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: Programming All levels C, Programming All levels C
More KwickClips from this lesson
Where does a local variable live?41 sec
What is lifetime?40 sec
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