Error Use Of Enum Without Previous Declaration
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about use of enum without previous declaration g++ hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask use of enum without previous declaration gcc Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. arduino use of enum without previous declaration Join them; it only takes a minute: Sign up error use of enum without previous declaration? up vote 1 down vote favorite 1 Hello i'm learning c++ from a book and i've typed just like the book but codeblocks
Forward Declare Enum
my compiler gives an error: use of enum 'Days' without previous declaration Can someone enlight me here? #include
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings arduino download and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it http://stackoverflow.com/questions/10888011/error-use-of-enum-without-previous-declaration only takes a minute: Sign up C++ Use of enum '___' without previous declaration in header file? up vote 0 down vote favorite I'm trying to use enums to represent streets and directions in a traffic simulation. I'm running into an issue of trying to include in my Vehicle header file putting the enums in the constructor and putting it http://stackoverflow.com/questions/29953340/c-use-of-enum-without-previous-declaration-in-header-file into the Vehicle constructor. I get the error when I try to compile Vehicle.h - use of enum 'street/direction' without previous declaration. - and two expected identifier before ',' token where I declare Vehicle constructor Here is what I have so far. //Street.h #ifndef STREET_H #define STREET_H enum street { Main = 1, Church, }; #endif //Direction.h #ifndef DIRECTION_H #define DIRECTION_H enum direction { E = 1, W, N, }; #endif //Vehicle.h #ifndef VEHICLE_H #define VEHICLE_H #include "Street.h" #include "Direction.h" class Vehicle { private: int vehicleNumber; int arrivalTime; int departureTime; enum street; enum direction; public: Vehicle(int, enum, enum, int); }; #endif c++ share|improve this question edited Apr 29 '15 at 20:04 NathanOliver 41.8k125595 asked Apr 29 '15 at 19:58 Ricardo Rigaroni 348 3 Vehicle(int, enum, enum, int); you should put the name of the enum type, instead of the keyword enum (i.e. street, direction) –Borgleader Apr 29 '15 at 20:00 1 Also, you have extra commas after the last enum values in your declarations. –dwcanillas Apr 29 '15 at 20:02 3 @dwcanillas Extra trailing co
Sign in Pricing Blog Support Search GitHub This repository Watch 19 Star 34 Fork 25 jpiat/arduino Code Issues 14 Pull requests 0 Projects 0 Wiki Pulse Graphs New https://github.com/jpiat/arduino/issues/1 issue use of enum ‘receiver_state’ without previous declaration error in the LiFiReceiver.ino #1 https://gcc.gnu.org/ml/gcc-help/2011-02/msg00195.html Closed bsainandan opened this Issue Nov 26, 2015 · 47 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 4 participants bsainandan commented Nov 26, 2015 I tried your code on my Arduino UNO board, when i dumped LiFiEmitter it is working fine use of on my Arduino board and when i dumped LIFIReceiver.ino to my Arduino UNO i am getting this following error use of enum ‘receiver_state’ without previous declaration. Can you resolve me with this issue . Thanks in advance. Owner jpiat commented Nov 26, 2015 can you try again ? I just did a push. lawrenciumbc commented Nov 26, 2015 I have just tried it now on use of enum a project I am working on and appear to have the same issue. Here is a copy of my error messages in case they are useful to you: ['lifi_transiver' is the emitter code and compiled fine on its own, 'lifi_transiver_reciever' is the receiver code] Arduino: 1.6.5 (Windows 7), Board: "Arduino Uno" lifi_transiver:78: error: use of enum 'receiver_state' without previous declaration lifi_transiver_reciever:53: error: conflicting declaration 'char frame_buffer [38]' lifi_transiver:63: error: 'frame_buffer' has a previous declaration as 'unsigned char frame_buffer [38]' lifi_transiver_reciever:54: error: conflicting declaration 'int frame_index' lifi_transiver:64: error: 'frame_index' has a previous declaration as 'char frame_index' lifi_transiver_reciever:55: error: conflicting declaration 'int frame_size' lifi_transiver:65: error: 'frame_size' has a previous declaration as 'char frame_size' lifi_transiver_reciever.ino: In function 'void setup()': lifi_transiver_reciever:203: error: redefinition of 'void setup()' lifi_transiver:145: error: 'void setup()' previously defined here lifi_transiver_reciever.ino: In function 'void loop()': lifi_transiver_reciever:218: error: redefinition of 'void loop()' lifi_transiver:158: error: 'void loop()' previously defined here lifi_transiver_reciever:236: error: no matching function for call to 'add_byte_to_frame(unsigned char [38], char, char, receiver_state, unsigned char&)' lifi_transiver_reciever.ino:236:107: note: candidates are: lifi_transiver.ino:78:5: note: int add_byte_to_frame(char, int, int, int, unsigned char) lifi_transiver.ino:78:5: note: no known conversion for argument 2 from 'char' to 'int' lifi_transiver_reciever.ino:167:5: note: i
Re: Error when forward referencing an enum in a typedef From: Jonathan Wakely