C90
E255504
C90 is the informal name for the 1990 standardization of the C programming language defined by ISO/IEC 9899.
All labels observed (1)
| Label | Occurrences |
|---|---|
| C90 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2313463 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: C90 Context triple: [ISO/IEC 9899, alsoKnownAs, C90]
-
A.
C-9
C-9 is a mountain railway line of Madrid’s Cercanías commuter rail network that connects the city with the Sierra de Guadarrama, including the Puerto de Navacerrada and Cotos areas.
-
B.
M90
M90 is a major motorway in Scotland that connects Perth to the Forth Road Bridge, forming a key part of the route between the Scottish Highlands and Edinburgh.
-
C.
C-8
C-8 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with various suburban areas.
-
D.
A92
A92 is a major trunk road in eastern Scotland that runs along the coast, connecting several key towns and cities including Dundee and Aberdeen.
-
E.
C-1
C-1 is a commuter rail line in the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: C90 Target entity description: C90 is the informal name for the 1990 standardization of the C programming language defined by ISO/IEC 9899.
-
A.
C-9
C-9 is a mountain railway line of Madrid’s Cercanías commuter rail network that connects the city with the Sierra de Guadarrama, including the Puerto de Navacerrada and Cotos areas.
-
B.
M90
M90 is a major motorway in Scotland that connects Perth to the Forth Road Bridge, forming a key part of the route between the Scottish Highlands and Edinburgh.
-
C.
C-8
C-8 is a commuter rail line within the Cercanías Madrid network that connects central Madrid with various suburban areas.
-
D.
A92
A92 is a major trunk road in eastern Scotland that runs along the coast, connecting several key towns and cities including Dundee and Aberdeen.
-
E.
C-1
C-1 is a commuter rail line in the Cercanías Madrid network that connects central Madrid with its surrounding metropolitan areas.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
C programming language standard
ⓘ
programming language standard ⓘ |
| alsoKnownAs |
ANSI C
ⓘ
linked to:
C
C89 ⓘ ISO C90 ⓘ
linked to:
ISO/IEC 9899
|
| appliesToLanguage | C ⓘ |
| basedOn |
ANSI X3.159-1989 C standard
ⓘ
linked to:
ANSI X3.159-1989
|
| countryOfOrigin | International ⓘ |
| defines |
character sets and execution character set requirements
ⓘ
floating-point behavior in cooperation with IEEE 754 ⓘ header files for the C standard library ⓘ integer types and their ranges ⓘ requirements for freestanding implementations ⓘ requirements for hosted implementations ⓘ the behavior of undefined, unspecified, and implementation-defined aspects ⓘ the preprocessor for C ⓘ translation phases for C source code ⓘ |
| field |
computer programming
ⓘ
software engineering ⓘ |
| followedBy | C99 ⓘ |
| follows |
K&R C
ⓘ
linked to:
The C Programming Language
|
| goal | to provide a portable, reliable definition of the C language ⓘ |
| includesLibraryHeader |
assert.h
ⓘ
ctype.h ⓘ errno.h ⓘ float.h ⓘ limits.h ⓘ locale.h ⓘ math.h ⓘ setjmp.h ⓘ signal.h ⓘ stdarg.h ⓘ stddef.h ⓘ stdio.h ⓘ stdlib.h ⓘ
linked to:
GNU C Library
string.h ⓘ time.h ⓘ |
| precededBy |
K&R C
ⓘ
linked to:
The C Programming Language
|
| publishedBy |
International Electrotechnical Commission
ⓘ
International Organization for Standardization ⓘ |
| specifies |
the behavior of main function in hosted environments
ⓘ
the rules for declarations and definitions ⓘ the rules for scope and linkage ⓘ the rules for storage duration ⓘ the rules for type conversions ⓘ |
| standardizes |
C standard library
ⓘ
linked to:
ISO/IEC 9899
semantics of the C programming language ⓘ syntax of the C programming language ⓘ |
| standardNumber |
ISO/IEC 9899:1990
ⓘ
linked to:
ISO/IEC 9899
|
| status | superseded by later C standards such as C99 and C11 ⓘ |
| yearAdopted | 1990 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: C90 Description of subject: C90 is the informal name for the 1990 standardization of the C programming language defined by ISO/IEC 9899.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.