Identifiers in Primary Expressions
Identifiers can have integral, float
, enum
, struct
, union
, array, pointer, or function type. An identifier is a primary expression provided it has been declared as designating an object (in which case it is an l-value) or as a function (in which case it is a function designator). See L-Value and R-Value Expressions for a definition of l-value.
The pointer value represented by an array identifier is not a variable, so an array identifier cannot form the left-hand operand of an assignment operation and therefore is not a modifiable l-value.
An identifier declared as a function represents a pointer whose value is the address of the function. The pointer addresses a function returning a value of a specified type. Thus, function identifiers also cannot be l-values in assignment operations. For more information, see Identifiers.
See also
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