Linker problems with inline functions

[10oTURfi]

So... After alot of headaches I figured that this is causing linker errors:
(since code is rather large, I simplified it alot)

//Somewhere in console.h
inline int urand(int MIN, int MAX);

...

//Somewhere in console.cpp
//Include guards here
inline int urand(int MIN, int MAX)
{
    return (rand()%(MAX-MIN+1) + MIN);
}

...

//Somewhere in myClass.cpp
#include "console.h"

myClass::myClass()
{
    //Init age
    blahblah = urand(0, 4);
}

And the compiler says this:

1>LINK : C:\Documents and Settings\Drago\Desktop\Mislav\Console Learning Project\Console-Learning-Project\Debug\Console Learning Project.exe not found or not built by the last incremental link; performing full link
1>myClass.obj : error LNK2019: unresolved external symbol "int __cdecl urand(int,int)" (?urand@@YAHHH@Z) referenced in function "public: __thiscall myClass::myClass(void)" (??0myClass@@QAE@XZ)
1>main.obj : error LNK2001: unresolved external symbol "int __cdecl urand(int,int)" (?urand@@YAHHH@Z)
1>C:\Documents and Settings\Drago\Desktop\Mislav\Console Learning Project\Console-Learning-Project\Debug\Console Learning Project.exe : fatal error LNK1120: 1 unresolved externals

Is there a way to use that inline function I defined in console.h in a constructor of a class?

[ne555]

You didn't defined it in console.h (you just declare it)
inline and template functions must be in headers.

Also, header (include) guards are for headers, not for sources.