How to use a function in three different .cpp files

I have three .cpp files these are named MeshLoader.cpp, DynamicXMesh.cpp and StaticXMesh.cpp

I have a function in the MeshLoader.cpp file named FindTexturePath and I want to call and use it in the DynamicXMesh.cpp and StaticXMesh.cpp files.

I have inclu开发者_运维技巧ded MeshLoader.cpp(#include "MeshLoader.cpp") file in boot XMesh files and of course get an error that says function is already defined...

Also I tryed to use pragma once and ifndef ...:

//This is "MeshLoader.cpp"
pragma once

#ifndef MLOAD
#define MLOAD
  char* FindTexturePath( char* TexturePath ,LPSTR FileNameToCombine){
      ...
      ...
      ...
  }
#endif

/////

//This is StaticXMesh.cpp
#include "MeshLoader.cpp"
...
...
...
this->StatXMeshTexturePath = FindTexturePath(StatXMeshTexturePath,d3dxMaterials[i].pTextureFilename);
...
...

///// And same call for DynamicXMesh.cpp

I hope I explained myself clear enough... Thank you for givin your time...

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You need to create MeshLoader.h, and put something like this in it

#ifndef INCLUDED_MESH_LOADER_H
#define INCLUDED_MESH_LOADER_H

char* FindTexturePath( char* TexturePath ,LPSTR FileNameToCombine);

#endif

And include that in your other cpp files. Each of the cpp files just need the declaration of FindTexturePath to compile. So whenever you need to make a function in a cpp public to other cpp files, create a .h file that has the function declarations in.

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The preferred method is to put the function declaration in a .h file, and let the linker combine all the .cpp files into one executable.

If you insist on doing it in a nonstandard way, you can make what you have work by making the function inline or static.

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put the function prototype in an header file (MeshLoader.h) and include that file everywhere you need to use that function.

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As other users have stated, you want to place declarations into the header (.h or .hpp) file.

At times you may wish to have a definition in the header file as well. At this point, you make a static function definition: static char* FindTexturePath(...) { .. }