creating classes link error

Question

I\'m using Dev-C++ 5.2.0.1

I took an example of how to put a class in another file from a website but it resulted in an error.

In the file class.h I have:

<

Answer 1

New answer.

Are you compiling and linking all of your files together? In gcc you would do something like:

gcc -o myExe class.cpp main.cpp

I'm not so sure about dev-c++, but I imagine it's not much different.

Answer 2

foo() only have definition. If you want to use a function that doesn't have a implement， Linker will give you this error "undefined reference".