Declaring Class function error?
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Hi all, :) I am experiencing a strange problem when declaring classes outside the main source file in VC++. I have made an experiment that demonstrates my problem. There are two files: “main.cpp” and “class.cpp”. “main.cpp” content:
#include "class.cpp"
int main() {
return 0;
}“class.cpp” content:
class Class {
public:
void Test();
};void Class::Test() {
return;
}When I try to compile I get following error:
--------------------Configuration: main - Win32 Debug-------------------- Compiling... main.cpp class.cpp Linking... class.obj : error LNK2005: "public: void __thiscall Class::Test(void)" (?Test@Class@@QAEXXZ) already defined in main.obj Debug/main.exe : fatal error LNK1169: one or more multiply defined symbols found Error executing link.exe. main.exe - 2 error(s), 0 warning(s)It says that the function void Test() is already declared, but how? Please help me, am I doing something wrong? :( Aidman » over and out -
Hi all, :) I am experiencing a strange problem when declaring classes outside the main source file in VC++. I have made an experiment that demonstrates my problem. There are two files: “main.cpp” and “class.cpp”. “main.cpp” content:
#include "class.cpp"
int main() {
return 0;
}“class.cpp” content:
class Class {
public:
void Test();
};void Class::Test() {
return;
}When I try to compile I get following error:
--------------------Configuration: main - Win32 Debug-------------------- Compiling... main.cpp class.cpp Linking... class.obj : error LNK2005: "public: void __thiscall Class::Test(void)" (?Test@Class@@QAEXXZ) already defined in main.obj Debug/main.exe : fatal error LNK1169: one or more multiply defined symbols found Error executing link.exe. main.exe - 2 error(s), 0 warning(s)It says that the function void Test() is already declared, but how? Please help me, am I doing something wrong? :( Aidman » over and out -
pretty simple to fix: the class prototype should be in a header called class.h The class implementation (the class' function definitions) should be in class.cpp. Both main.cpp and class.cpp should #include "class.h" ;-)