Link Error : already defined ??

[version1]

I'm getting the following error when trying to Build the exe:

"file:student.obj : error LNK2005: "public: void __thiscall Student::getData(void)"
(?getData@Student@@QAEXXZ) already defined in main.obj"

I've got a main.cpp, student.cpp, and student.h.

The main.cpp basically calls the getData and showData functions in student.cpp.
The student.h file defines a Student class, consisting of Name, Age, GPA.

I've put the "#ifndef, #define, #endif" in the student.h. I'm not sure why
I'm getting an error saying the getData (and showData) function is already
defined.

Any help will be greatly appreciated!!

Thanks!

[Danny Kalev]

you have to show us how the getData member function is implemented in
all three files. Could it be that you're #including Student.cpp in
main.cpp? Alternatively, did you implement (rather than defined) this
member function inside the header file? In short this error is the
result of compiling the code of this member function (i.e., its body)
more than once.

Danny

version1 wrote:
>
> I'm getting the following error when trying to Build the exe:
>
> "file:student.obj : error LNK2005: "public: void __thiscall Student::getData(void)"
> (?getData@Student@@QAEXXZ) already defined in main.obj"
>
> I've got a main.cpp, student.cpp, and student.h.
>
> The main.cpp basically calls the getData and showData functions in student.cpp.
> The student.h file defines a Student class, consisting of Name, Age, GPA.
>
> I've put the "#ifndef, #define, #endif" in the student.h. I'm not sure why
> I'm getting an error saying the getData (and showData) function is already
> defined.
>
> Any help will be greatly appreciated!!
>
> Thanks!

[version1]

Danny,

Thanks for the response! It took some experimenting, but I finally figured
it out and you're right on...I was putting Student.cpp in the main.cpp.


Thanks again.

version1


Danny Kalev <dannykk@inter.net.il> wrote:
>you have to show us how the getData member function is implemented in
>all three files. Could it be that you're #including Student.cpp in
>main.cpp? Alternatively, did you implement (rather than defined) this
>member function inside the header file? In short this error is the
>result of compiling the code of this member function (i.e., its body)
>more than once.
>
>Danny
>
>version1 wrote:
>>
>> I'm getting the following error when trying to Build the exe:
>>
>> "file:student.obj : error LNK2005: "public: void __thiscall Student::getData(void)"
>> (?getData@Student@@QAEXXZ) already defined in main.obj"
>>
>> I've got a main.cpp, student.cpp, and student.h.
>>
>> The main.cpp basically calls the getData and showData functions in student.cpp.
>> The student.h file defines a Student class, consisting of Name, Age,
GPA.
>>
>> I've put the "#ifndef, #define, #endif" in the student.h. I'm not sure
why
>> I'm getting an error saying the getData (and showData) function is already
>> defined.
>>
>> Any help will be greatly appreciated!!
>>
>> Thanks!