Passing a struct from 1 C++ Class file to a second C++ Class File

I have this struct

typedef struct                                          // Create A Structure For Star
{
      int r, g, b;                                    // Stars Color
      GLfloat dist;                                    // Stars Distance From Center
      GLfloat angle;                                    // Stars Current Angle
}
stars;                                                // Structures Name Is Stars
stars star[num];                                    // Make 'star' Array Of 'num' Using Info From The Structure 'stars'

which is is the main.cpp file but declared before methods open, and it is altered in the main.cpp, and i want it passed through this line

OnTimer(hDC, texture, loop, num, zoom, tilt, spin); which calls the graphics.cpp file and runs the Ontimer Method,

i also have this declared at the top of the main.cpp file

void OnTimer(HDC hDC, GLuint texture[], GLuint loop, int num, GLfloat zoom, GLfloat tilt, GLfloat spin);                           // Draw OpenGL Scene

as you can see its a OpenGL program which i am trying to create and i just want to pass the struct of veriables from the main.cpp to the graphics.cpp so i can reuse the main.cpp and all i need to do is alter the graphics.cpp file to get a different output of the screen but i cant figure out how to pass the struct from 1 file class t oa second file class