Programmer's
Editor 14.04
Context:
| Epsilon User's Manual and Reference |
| Epsilon Extension Language |
| . . . |
| Scope of Variables |
| Data Types |
| . . . |
| Pointer Declarators |
| Array Declarators |
| Function Declarators |
| Structures and Unions |
| Complex Declarators |
| . . . |
| Initialization |
| . . . |
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| Array Declarators | Epsilon Extension Language | Structures and Unions |
Epsilon User's Manual and Reference > Epsilon Extension Language > Data Types >
Function Declarators
Function declarators are used in conjunction with type specifiers to declare variables of type function returning t, where t is some type. The form of a function declarator is
declarator ()
or
declarator ( ansi-argument-list )
Again, suppose T is a type specifier and D is a declarator,
and the declaration "T D;" declares the identifier embedded in
D to be of type "... T". Then the declaration
T (D)(); declares the identifier to be of type
"... function returning T".
Consider:
char (c)();
char *(fpc());
char (*pfc)(int count, char *msg);
The first line declares c to be of type
function returning char. The second line declares fpc to be
a function returning pointer to char. The third line declares
pfc to be of type pointer to function returning char. The
third example also declares that pfc requires two parameters and
gives their types; the first two examples provide no information
about their functions' parameters.
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