Question

In C++, what is the convention for including headers for class files in the ‘main’ file. e.g.

myclass.h   class MyClass {   doSomething(); }   myclass.cpp    doSomething() {       cout << 'doing something';   }   run.cpp  #include 'myclass.h' #include 'myclass.cpp'  etc.. 

Is this relatively standard?

Answer 1

You don’t include the .cpp file, only the .h file. The function definitions in the .cpp will be compiled to .obj files, which will then be linked into the final binary. If you include the .cpp file in other .cpp files, you will get two different .obj files with the same funciton definition compiled, which will lead to linker error.