Redefinition Error In
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Error Redefinition Of C++
us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is redefinition of class c++ xcode a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up error: redefinition of class up vote 2 down vote favorite 2 Here's my redefinition of class c++ inheritance code: // in main.cpp #include "iostream" #include "circle.cpp" #include "rectangle.cpp" #include "shape.cpp" using namespace std; int main() { Shape shapes[10]; for (int i = 0; i < 10; i++){ if (i % 2) shapes[i] = Circle(5); else shapes[i] = Rectangle(10, 10); cout << shapes[i].getArea(); } return 0; } // in circle.cpp #include "shape.cpp" class Circle : public Shape { private: int radius; static const double PI = 3.14159265358979323846; public: Circle
C++ Redefinition Of Variable
(int radius) : radius(radius) {} virtual int getArea() const { return PI * radius*radius; }; virtual int setRadius(int radius){ radius = radius; } }; // in rectangle.cpp #include "shape.cpp" class Rectangle : public Shape { private: int width; int height; public: Rectangle(int width, int height) : width(width), height(height){} virtual int getArea() const { return width * height; } virtual void setWidth(int width){ this->width = width; } virtual void setHeigth(int height){ this->height = height; } }; // in shape.cpp class Shape { public: virtual int getArea() const = 0; }; When compiling, I get this error: error: redefinition of 'class Shape' How can I fix this? c++ compiler-errors share|improve this question asked Oct 3 '14 at 12:59 Aviv Cohn 2,04331243 Check out "include guards" or #pragma once for compilers that support something like that. It looks like the header may be included several time. And the whole including cpp files... this is not normally how it is done. –Niall Oct 3 '14 at 13:03 add a comment| 2 Answers 2 active oldest votes up vote 7 down vote accepted You should structure your code between .h (headers) and .cpp files (implementation). You should include header files: .h Never include .cpp files. (Unless you know what you do
here for a quick overview of the site Help Center Detailed answers to any questions you previous definition of class c++ might have Meta Discuss the workings and policies of this site redefinition of ios About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or
C++ #ifndef
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 http://stackoverflow.com/questions/26179408/error-redefinition-of-class 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Redefinition errors in .h files up vote 6 down vote favorite //list.h file typedef struct _lnode{ struct _lnode *next; size_t row; size_t column; short data; }lnode; typedef struct _llist{ struct _lnode *head; size_t size; }llist; //matrix.h file http://stackoverflow.com/questions/5430019/redefinition-errors-in-h-files typedef struct _matrix{ size_t width; size_t height; size_t k; int **data; }matrix; //smatrix.h file #include "list.h" #include "matrix.h" typedef struct _smatrix{ size_t width; size_t height; size_t k; llist data; }smatrix; smatrix* make_smatrix(matrix *m); smatrix.h file includes list.h file and matrix.h files. If I include those header files in smatrix.h file then I get redefinition of 'lnode'. redefinition of '_llist' and redefinition of '_matrix' errors. If I took those heder files our from smatrix.h file then the error went away but it complains about matrix type in the function parameter. I want to call functions defined in list.h and matrix.h files in smatrix.c file.. What do I do? Thanks in advance.. c share|improve this question edited Apr 29 '15 at 17:48 BartoszKP 22.5k84167 asked Mar 25 '11 at 8:18 LCYSoft 3,3141160116 add a comment| 4 Answers 4 active oldest votes up vote 12 down vote accepted Possible problem of multiple inclusions. Try to guard your header files with file list.h #ifndef _L
to check the nightly builds in the forum. Home Help Search Login Register Wiki Code::Blocks » User forums » General (but http://forums.codeblocks.org/index.php?topic=20798.0 related to Code::Blocks) » Error: redefinition of function « previous next » Send this topic Print Pages: [1] Go Down Author Topic: Error: redefinition of function (Read 1907 times) Phrosen Single posting newcomer Posts: 7 Error: redefinition of function « on: December 21, 2015, 06:14:55 pm » I have a problem that I think is related to my IDE. I am using definition of Codeblocks (13.12).Here's my "set up":main.c (includes 'int main()')header.h (your typical header, includes prototypes)test.c (a random file, includes custom-made functions.)Here's the issue: All the functions works as intended, but when I compile my test.c I get an error (for each function) saying: "error: redefinition of ***"This issue doesn't affect anything, but it's annoying. I'm wondering if it's possible to get rid of redefinition of c it somehow? Maybe I'm doing something wrong when I'm creating my prototypes?Here's an example of what my functions and prototypes look like:Code: [Select]void func_showMenu(); //This is the prototype, in header.h
void func_showMenu(){
//This is the function, in test.c
}Is there some setting in Code::Blocks that can fix this issue? Logged headkase Almost regular Posts: 129 Re: Error: redefinition of function « Reply #1 on: December 21, 2015, 07:26:33 pm » Please post the complete contents of both your header and source files. If each function pair is the same then one complete pair will suffice. Make sure to include the boiler-plate code like the: define that is supposed to be in a header. « Last Edit: December 21, 2015, 07:28:07 pm by headkase » Logged stahta01 Lives here! Posts: 5422 Re: Error: redefinition of function « Reply #2 on: December 21, 2015, 09:28:05 pm » Post the complete header file; likely you did NOT guard it correctly.Edit: read this site rules. http://forums.codeblocks.org/index.php/topic,9996.0.htmlAlso, Post a full build log in code tags.Tim S. « Last Edit: December 21, 2015, 09:30:02 pm by stahta01