Linkage
Linkage is a C identifier property determining whether declarations in different scopes or translation units designate the same entity.
Modern C, Third Edition
Linkage is the C property determining whether declarations in different scopes or translation units can designate the same entity.
- How it is used
- Explains how declarations refer to shared or separate entities across scopes and translation units.
- How deep it goes
- Distinguishes external, internal, and no linkage, then separates linkage from storage duration and explains extern and static.
- Examples
- Uses extern shadowing, file-scope and block-scope identifiers, object files, library functions, and a storage-class comparison table.
- What you can do after
- Evaluate whether declarations designate the same entity and distinguish linkage from storage duration.
Modern C
Linkage is a property of a C identifier that determines whether declarations in different scopes or translation units designate the same entity.
- How it is used
- Explains how C declarations refer to the same entities across scopes and object files.
- How deep it goes
- Distinguishes external, internal, and absent linkage, while relating them to scope, storage duration, and storage classes.
- Examples
- Uses local-variable shadowing, an extern declaration, file-scope objects, and a storage-class comparison table.
- What you can do after
- Evaluate which declarations designate the same object or function and distinguish linkage from storage duration.
Related concepts
- applicationproduces · An application is a software program or system that performs tasks or provides functionality for users or other software systems.
- external linkageincludes · External linkage is the property that allows declarations in different translation units to designate the same entity.
- internal linkageincludes · Internal linkage is the property restricting an identifier’s designated entity to a single translation unit.
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