Name of a function return type as name of user define data type

Question

Is it legal to name a function same as that of a user defined data type with enum ,in C? For Example:

enum sentence_id sentence_id(const char *sentence, bool strict);

and enum sentence_id is defined as given below

enum sentence_id {
MINMEA_INVALID = -1,
MINMEA_UNKNOWN = 0,
MINMEA_SENTENCE_RMC,
MINMEA_SENTENCE_GGA,
MINMEA_SENTENCE_GSA,

};  

Is it applicable to other user defined data type(as structure)?

Answer 1

This only looks strange, because the identifier for the enumeration and the function are identical, which is possible, because a enumeration identifier always has to follow an enum keyword and an enum always is followed by an identifier.

So let's give them different names:

enum minmea_sentence_id_e 
{
…
}; 

This defines an enumeration with the name minmea_sentence_id_e.

The function gets another identifier, too:

enum minmea_sentence_id_e minmea_sentence_id_f(const char *sentence, bool strict);

Now it should be quite clear that there is a function called minmea_sentence_id_f returning a value of enumeration named minmea_sentence_id_e.