Want Help on a compile Problem

[KatharinaLin]

I have tried my best to find the problem for two days ,but failed.
This is the report:
/tmp/cccZdMj9.o: In function BooleanMatrix::BooleanMatrix(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::BooleanMatrix(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::replace(bool, int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:13: multiple definition ofBooleanMatrix::replace(bool, int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:13: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::operator&(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:21: multiple definition ofBooleanMatrix::operator&(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:21: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::operator|(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:28: multiple definition ofBooleanMatrix::operator|(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:28: first defined here
/tmp/cccZdMj9.o: In function BooleanMatrix::BooleanProduct(BooleanMatrix const&) const': /home/lin/DS/main.cpp/BooleanMatrix.cpp:35: multiple definition ofBooleanMatrix::BooleanProduct(BooleanMatrix const&) const'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:35: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::~BooleanMatrix()': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::~BooleanMatrix()': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::replace(bool, int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:13: multiple definition ofBooleanMatrix::replace(bool, int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:13: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::operator&(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:21: multiple definition ofBooleanMatrix::operator&(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:21: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::operator|(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:28: multiple definition ofBooleanMatrix::operator|(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:28: first defined here
/tmp/ccnYc5A0.o: In function BooleanMatrix::BooleanProduct(BooleanMatrix const&) const': /home/lin/DS/main.cpp/BooleanMatrix.cpp:35: multiple definition ofBooleanMatrix::BooleanProduct(BooleanMatrix const&) const'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:35: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::~BooleanMatrix()': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::~BooleanMatrix()': /home/lin/DS/main.cpp/BooleanMatrix.cpp:6: multiple definition ofBooleanMatrix::BooleanMatrix(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:6: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::BooleanMatrix(int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:9: multiple definition ofBooleanMatrix::BooleanMatrix(int, int)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:9: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::replace(bool, int, int)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:13: multiple definition ofBooleanMatrix::replace(bool, int, int)'
main.cpp.zip

/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:13: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::operator&(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:21: multiple definition ofBooleanMatrix::operator&(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:21: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::operator|(BooleanMatrix const&)': /home/lin/DS/main.cpp/BooleanMatrix.cpp:28: multiple definition ofBooleanMatrix::operator|(BooleanMatrix const&)'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:28: first defined here
/tmp/cckiKUTS.o: In function BooleanMatrix::BooleanProduct(BooleanMatrix const&) const': /home/lin/DS/main.cpp/BooleanMatrix.cpp:35: multiple definition ofBooleanMatrix::BooleanProduct(BooleanMatrix const&) const'
/tmp/ccoVXdjj.o:/home/lin/DS/main.cpp/BooleanMatrix.cpp:35: first defined here
collect2: error: ld returned 1 exit status
lin@lin-VirtualBox:~/DS/main.cpp$

[KatharinaLin]

main.cpp.zip

[ghostbody]

@KatharinaLin multiple definition problem, please remember to add #program once or

#ifndef  HEADER_HPP_
#define HEADER_HPP_
// your class declaration
#endif

[KatharinaLin]

I just add #ifndef...into my digraph.cpp, others are with it before, but it did't work, the problem still exist.

[KatharinaLin]

[ghostbody]

@KatharinaLin no need to add it in cpp files. I found that you file "Ralation.hpp" dose not have a definition protection.

[KatharinaLin]

I'm so sorry.Firstly I add "#ifndef"into Relation.hpp,but I forget "RELATION_HPP", It reported some mistakes to me but without the same problem of redefinition.So I thought it repaired.However, Linux Teminal just don't show me.When fixed the problems, redefinition problem show again.I don't know why they didn't appear at the same time .I'm so sad.

[KatharinaLin]

[ghostbody]

I can not get your point? What's exactly happened with you? =_=

[Mensu]

因为你在Relation.cpp和BooleanMatrix.cpp里都有那些函数的定义，编译器不知道要选哪个

BooleanMatrix.cpp里有那些函数不奇怪，但为什么Relation.cpp里也有那些函数的定义呢？
因为Relation.cpp里有#include "Relation.hpp"，
于是Relation.cpp里出现了#include "BooleanMatrix.cpp"
于是Relation.cpp把那些函数的定义复制了进来，Relation.cpp里也就有了那些函数的定义

不妨试试
#include "BooleanMatrix.cpp" 换成
#include "BooleanMatrix.hpp"

在没有十足把握的情况下， 建议不要include一个cpp，特别是在这个cpp里有函数定义的时候
给每个hpp加上防止多次include的#ifndef XXX #define XXX ... #endif 是个好习惯
（我觉得你其他文件都做得挺好的啊，这里应该是不小心打错了吧）

[KatharinaLin]

@ghostbody It didn't work actually.

[KatharinaLin]

@Mensu I am trying now.Thank you.

[KatharinaLin]

@Mensu Yes, it's actually the problem.Thank you, I will remember it next time.