[[Property:title|eif_attribute]]
[[Property:weight|-12]]
[[Property:uuid|c843f272-8ac2-c30e-e71f-bd6c567e9de3]]
==Synopsis==
<code lang="text">
#include "eif_cecil.h"

EIFFEL_TYPE eif_attribute (EIF_REFERENCE object, char * name, EIFFEL_TYPE, int * status);
</code>

==Description==
The <code lang="text">eif_attribute</code> macro returns the attribute of name <code lang="text">name</code>, which is of type <code lang="text">EIFFEL_TYPE</code>. 
<code lang="text">EIFFEL_TYPE</code> is the type of the Eiffel attribute. It can be one of the following: 
# <code lang="text">EIF_INTEGER</code> 
# <code lang="text">EIF_CHARACTER</code>
# <code lang="text">EIF_BOOLEAN</code>
# <code lang="text">EIF_DOUBLE</code>
# <code lang="text">EIF_REAL</code>
# <code lang="text">EIF_REFERENCE</code> 

If <code lang="text">status</code> is <code lang="text">NULL</code> then no status is set. Otherwise the status of the call is put into <code lang="text">*status</code>. Its value is one of the following: 
# <code lang="text">EIF_NO_ATTRIBUTE</code>
# <code lang="text">EIF_CECIL_OK</code> 

If the visible exception is enabled, then a visible exception is raised upon failure (<code lang="text">EIF_NO_ATTRIBUTE</code>, <code lang="text">EIF_CECIL_ERROR</code>). 

==Return value==

Successful: the Eiffel attribute.

Failing: (<code lang="text">EIFFEL_TYPE</code>) 0

==Notes==

If the return value is an <code lang="text">EIF_REFERENCE</code>, you must protect it with [[eif_protect]].

You cannot access a constant attribute, or the result of a once function with <code lang="text">eif_attribute</code>. 

==Conformance==

ISE Eiffel 4.5 and later. 

==Compatibility==
<code lang="text">
eif_attribute (object, name, type, NULL)
</code>
is equivalent to:
<code lang="text">
eif_field (object, name, type)
</code>
which is deprecated. 


{{SeeAlso| <br/>
[[eif_protect]]<br/>
[[attribute_exists]]<br/>
[[eif_procedure]]<br/>
[[eif_*_function]]  }}