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Error Redefinition Of Previously Declared Here

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 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 only takes a minute: Sign up C++ redifinition of'..' and previously declared here errors up vote 2 down vote favorite I have already searched for this type of error and found a few threads, but each one recommended using #ifndef to make sure the header file is only loaded once. I have done this and still get an error. The odd thing is this error: circle.cc:25:6: error: prototype for ‘void circle::populate_classobj(int, int, int)’ does not match any in class ‘circle’ says my function only has 3 int's but every place i have that function, i have 4 ints. here is my class header file #ifndef _CIRCLE_H_ #define _CIRCLE_H_ #define PI 3.14159 class circle { public: float radius(int x1, int x2, int y1, int y2); float circumference(float d); float area(float d); void populate_classobj(int, int, int, int); protected: float distance(int x1, int x2, int y1, int y2); private: int x1, y1, x2, y2; }; #endif // _CIRCLE_H_ Here is my function call in my class file circle.cc void circle::populate_classobj(int cx1, int cx2, int cy1, int cy1) { x1=cx1; x2=cx2; y1=cy1; y2=cy2; } and here is what i actually call in main mycircle.populate_classobj(x1,x2,y1,y2); there are variables called x1, x2, y1, y2 in main The really odd thing is that the redefinition error is only for cy1, not cx1, cx2 or cy2 Thanks for any help and if you need to see more of my code, ask for it. -Will c++ class share|improve this question edited Oct 3 '11 at 17:21 i_am_jorf 39.1k982168 asked Oct 3 '11 at 17:20 Will Gunn 1551314 4 cy1 is declared twice in the method definition,

Sign in Pricing Blog Support Search GitHub This repository Watch 48 Star 151 Fork 65 cdcseacave/openMVS Code Issues 16 Pull requests 4 Projects 0 Wiki Pulse Graphs New issue Compile Error in Ubuntu 15.10 (redefinition of ... previously declared here) #100 http://stackoverflow.com/questions/7638409/c-redifinition-of-and-previously-declared-here-errors Closed alexhagiopol opened this Issue Jun 28, 2016 · 7 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 2 participants alexhagiopol commented Jun 28, 2016 • edited I followed the https://github.com/cdcseacave/openMVS/issues/100 build instructions in the Wiki using a clean installation of Ubuntu 15.10. All is well until the OpenMVS compilation step when I type "make" in the openMVS_build directory. I get the following compilation errors: In file included from /home/alex/openMVS/libs/Common/Types.h:2710:0, from /home/alex/openMVS/libs/Common/Common.h:176, from /home/alex/openMVS/libs/Common/Common.cpp:12: /home/alex/openMVS/libs/Common/Types.inl: At global scope: /home/alex/openMVS/libs/Common/Types.inl:88:8: error: redefinition of ‘template cv::Ptr cv::makePtr()’ Ptr makePtr() ^ In file included from /usr/local/include/opencv2/core/core.hpp:4883:0, from /usr/local/include/opencv2/opencv.hpp:47, from /home/alex/openMVS/libs/Common/Types.h:125, from /home/alex/openMVS/libs/Common/Common.h:176, from /home/alex/openMVS/libs/Common/Common.cpp:12: /usr/local/include/opencv2/core/operations.hpp:2701:8: note: ‘template cv::Ptr cv::makePtr()’ previously declared here Ptr makePtr() ^ In file included from /home/alex/openMVS/libs/Common/Types.h:2710:0, from /home/alex/openMVS/libs/Common/Common.h:176, from /home/alex/openMVS/libs/Common/Common.cpp:12: /home/alex/openMVS/libs/Common/Types.inl:93:8: error: redefinition of ‘template cv::Ptr cv::makePtr(const A1&)’ Ptr makePtr(const A1& a1) ^ In file included from /usr/local/include/opencv2/core/core.hpp:4883:0, from /usr/local/include/opencv2/o

error ....redefinition of...... From: Alex Luya To: GCC , https://gcc.gnu.org/ml/gcc/2009-06/msg00018.html GCC-Help Date: Tue, 02 Jun 2009 14:16:35 +0800 Subject: Link error ....redefinition of...... I download source code http://forum.arduino.cc/index.php?topic=108313.0 for book <> from:http://users.cs.fiu.edu/~weiss/dsaa_c++/code/,try to compiler it,but got many errors,most of them error redefinition say: ...... previously declared here .......: redefinition of ..... I think template causes these errors,but how to fix it. ----------------------------------------------------------------------- My configuration: Ubuntu 9.04 GCC version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) Eclipse 3.4 CDT:.5.0.2 ------------------------------------------------------------------------- Files and error message are following: StackAr.h ----- #ifndef STACKAR_H #define STACKAR_H #include "../vector.h" #include error redefinition of "../dsexceptions.h" template class Stack { public: explicit Stack( int capacity = 10 ); bool isEmpty( ) const; ............. #include "StackAr.cpp" #endif -------------- StackAr.cpp #include "StackAr.h" template Stack::Stack( int capacity ) : theArray( capacity ) { topOfStack = -1; } template bool Stack::isEmpty( ) const { return topOfStack == -1; } ........... Test.cpp #include #include "StackAr.h" using namespace std; int main() { Stack s; for (int i = 0; i < 10; i++) s.push(i); while (!s.isEmpty()) cout << s.topAndPop() << endl; return 0; } --------------------------------------------- error message: **** Build of configuration Debug for project DACPP **** make all Building file: ../src/stack/StackAr.cpp Invoking: GCC C++ Compiler g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/stack/StackAr.d" -MT"src/stack/StackAr.d" -o"src/stack/StackAr.o" "../src/stack/StackAr.cpp" ../src/stack/StackAr.cpp:7: erreur: redefinition of âStack::Stack(int)â ../src/stack/StackAr.cpp:7: erreur: âStack::Stack(int)â previously declared here ../src/stack/StackAr.cpp:17: erreur: redefinition of âbool Stack::isEmpty() constâ ../src/stack/StackAr.cpp:17: erreu

> Programming Questions > Unmodified ArduinoISP will not compile Print Go Down Pages: [1] Topic: Unmodified ArduinoISP will not compile(Read 4606 times) previous topic - next topic nerdboy64 Newbie Posts: 28 Karma: 0[add] Arduino rocks Unmodified ArduinoISP will not compile Jun 02, 2012, 04:48 am I tried to load the ArduinoISP sketch that comes with the IDE, without modifying it, and this is what I get:Code: [Select]In file included from ArduinoISP.cpp:66:
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:66: error: previous declaration of 'const uint16_t port_to_mode_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:127: error: conflicts with new declaration with 'C' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:67: error: previous declaration of 'const uint16_t port_to_input_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:128: error: conflicts with new declaration with 'C' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:68: error: previous declaration of 'const uint16_t port_to_output_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:129: error: conflicts with new declaration with 'C' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:70: error: previous declaration of 'const uint8_t digital_pin_to_port_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:131: error: conflicts with new declaration with 'C' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:72: error: previous declaration of 'const uint8_t digital_pin_to_bit_mask_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:133: error: conflicts with new declaration with 'C' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/pins_arduino.h:73: error: previous declaration of 'const uint8_t digital_pin_to_timer_PGM []' with 'C++' linkage
C:\Program Files (x86)\Arduino\arduino-0022\hardware\arduino\cores\arduino/Arduino.h:134: error: conflicts with new declaration with 'C' linkage
ArduinoISP:56: error: new declaration 'uint8_t write_flash(int)'<

 

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