Header file

I have cooked up a header file(i got it from the tutorial and made it into a header file) but when i compile it i get tjeis strange error, here is the code:

Code:

---

#ifndef _ANIMAL_
#define _ANIMAL_

namespace Mammal
{
          class Animal
          {
                public:
                      void eat();
                      void sleep();
                      void drink();
                private:
                        int legs;
                        int arms;
                        int age;
          };
}
#endif

---

oh, i forgot, here is the error:

Code:

---

g++.exe: no input files

make.exe: *** ["Animal] Error 1

Execution terminated

---

right, i'm starting to think it's because i have no source files, any ideas?

It needs a constructor. I don't know if that's the problem, but try it anyway.

ok, i'll try it

You don't compile header files. If you just want to test that the syntax is good, create a source file that includes the header, then compile that. Even better would be to create a simple main that tests the class and that you expand as you add to the class.

i tried putting a constructor and a deconstructor, do i need a deconstructor?

oh, ok

You don't need a constructor or destructor in a class, although you almost always want a constructor. That has nothing to do with the error, though.

Funny thing, i made the exact same error a couple of weeks ago and asked this very same board, scroll back a couple of pages and you can probably find the thread.

Don't start your header name with "_" like you did, i bet you, it will fix the problem :)

>> i bet you, it will fix the problem
While technically it is against the rules of the language standard, in practice this almost never causes a problem. It almost certainly was not the source of the problem here.